ometry Measurement 3: Spherical Geometry r Book - Series M-1 Teache EXCEL HSC GENERAL MATHEMATICS pages 100, 102, 126 centre of a circle of radius nearest cm. n angle of 120° at O, the A B 72° m 12 c O P 120° 15 cm O Q Mathletics Instant Workbooks rc PQ? of a circle of radius 12 cm. cm. Copyright © of length 58 cm subtends e of ∠AOB to the nearest A O θ 58 cm 22 cm Measurement 3: Spherical Geometry Measurement – Spherical geometry Topic Test TOPIC TEST Instructions • 15 multiple-choice questions Instructions • 15 multiple questions • Each choice question is worth 1 mark • Each question is worth 1 mark • Fill in only ONE CIRCLE • Fill in only ONE CIRCLE • Calculators may be used • Calculators may be used Time allowed: 20 minutes PART A SECTION I Total marks = 15 Time allowed: 20 minutes Total marks: 15 1 Greenwich meridian is also called: A Latitude B Longitude C meridian D prime meridian C 10 knots D 20 knots C 180° D 360° 2 One nautical mile per hour is equal to: A 1 knot B 2 knots 3 The longitude of the prime meridian is: A 0° B 90° 4 The radius of the Earth at the equator is approximately 6400 km. Find the circumference of the Earth at the equator correct to the nearest km. A 20 106 km B 40 212 km C 50 212 km D 60 106 km D 892 M D 4M D 33 knots 5 Given that 1 M = 1.852 km, 1560 km to the nearest nautical mile is: A 800 M B 842 M C 862 M 6 Given that 1 M = 1.852 km, a distance of 3704 m is equal to: A 1 M B 2M C 3M 7 Calculate the average speed, in knots, for a journey of 30 M in 3 hours. A 90 knots B 10 knots C 20 knots 8 Find the distance to the nearest km between two points on the Earth’s surface that subtend an angle of 1° at the centre. (Use the radius of the Earth = 6400 km.) A 110 km B 111 km C 112 km D 113 km 9 Adelaide is approximately (35° S, 139° E) while Tokyo is approximately at (35° N, 139° E). The distance between Adelaide and Tokyo is approximately: A 20 M B 63 M C 2400 M D 4200 M 10 Find the time taken for a ship to sail between the two points A (60° N, 110° W) and B (20° S, 110° W) at an average speed of 50 knots. A 1 day B 2 days C 3 days D 4 days 11 Ignoring time zones, the difference in time between two cities is 2.4 hours. In hours and minutes the time difference is: A 2 hours 4 minutes B 2 hours 24 minutes C 2 hours 40 minutes D none of these 45 CHAPTER 3 – Measurement – Spherical geometry Measurement 3: Spherical geometry Mathletics Instant Workbooks – Series M Copyright © 3P Learning ii 12 City C has location (34° S, 18° E) and city D (15° N, 17° W). The difference in longitude is: C 35° A 19° B 49° D 1° 12 City C has location (34° S, 18° E) and city D (15° N, 17° W). The difference in longitude is: 13 P(37° N, 120° E) and Q(37° N, 120° W) are two towns. P and Q: C 35° A 19° B 49° D 1° A both lie on the same great circle B both lie on the same small circle 13 P(37° N, 120° E) and Q(37° N, 120° W) are two towns. P and Q: C lie on neither the same great circle nor the same small circle A both lie on the same great circle B both lie on the same small circle D there is insufficient information C lie on neither the same great circle nor the same small circle 14 Two European cities, X and Y, are in different time zones. The difference in time between the cities is 1 insufficient /2 there hours.isCity X is eastinformation of city Y. If it is 10:35 a.m. in city X what is the time in city Y? 2D 14 Two European are p.m. in different time The difference inD time p.m.cities, X and 8:05 a.m. 7:51between a.m. the cities is C zones. A 12:51 B Y,1:05 21/2 hours. City X is east of city Y. If it is 10:35 a.m. in city X what is the time in city Y? 15 Two cities, L and M, have locations L(20° S, 70° W) and M(20° S, 47° E). Ignoring time zones, the difference 12:51 p.m. the two B 1:05 C 8:05 a.m. D 7:51 a.m. inA time between cities is: p.m. 15 Two and M, have B locations L(20° S, 70° W) and M(20° 47°minutes E). Ignoring 1 hour L32 minutes 2 hours 40 minutes hoursS, 48 theyzones, are on the the difference same time C 7 A cities, D time in time between the two cities is: B 2 hours 40 minutes C 7 Total hours marks 48 minutes are on the D they achieved for PART A same time SECTION15 II Instructions • This section consists of 10 questions TOPIC TEST • Show all necessary working Topic Test SECTION II PART B Instructions • This section consists of 10 questions Instructions • 40 This minutes section consists of 9 questions Time allowed: • Show all necessary working Total marks: 37 • Show all necessary working 16 Time allowed:45 40minutes minutes Time allowed: 2marks: marks each Total Total marks = 4037 A l 2 marks each A O 12 cm l B 60 ° a An arc makes an angle of 60° at the centre of a circle of radius 12 cm. Find the length of the arc correct to the nearest centimetre. 16 a An arc makes an angle of 60° at the centre of a circle of radius 12 cm. Find the length of the arc correct to the nearest centimetre. 60 ° A 1 hour 32 minutes TOPIC TEST O 12 cm b In a circle of radius 20 cm, an arc PQ of length 54 cm subtends ∠POQ at the centre. Find the size of ∠POQ to the nearest degree. b In a circle of radius 20 cm, an arc PQ of length 54 cm subtends ∠POQ at the centre. Find the size of ∠POQ to the nearest degree. B P 20 cm P O θ 54 cm 20 cm O θ Q 54 cm c Two points on the surface of a sphere with radius 21 cm have an angular distance of 80° . Find their Q spherical distance. c Two points on the surface of a sphere with radius 21 cm have an angular distance of 80° . Find their spherical distance. d Find the spherical distance between two points on the Earth’s surface if their angular distance is 65° . (radius of the Earth = 6400 km) d Find the spherical distance between two points on the Earth’s surface if their angular distance is 65° . (radius of the Earth = 6400 km) 46 46 EXCEL HSC GENERAL MATHEMATICS REVISION & EXAM WORKBOOK Measurement 3: Spherical geometry EXCEL HSC GENERAL MATHEMATICS REVISION & EXAM WORKBOOK Mathletics Instant Workbooks – Series M Copyright © 3P Learning iii 17 Referring to the diagram at right, which point lies: 1 mark each a on parallel of latitude 30° N 60°N 30° N b on meridian of longitude 40° E B D 0° c at (30° S, 40° W) C 30° S 18 Referring to the diagram above, give the location of points: 1 mark each A F E 60° S a A 60° W b B 60°E 40° W 19 For the points C and D in the above diagram, what is the difference in: 40° E 1 mark each a latitude b longitude 20 Given that 1.852 km = 1 M, find correct to 2 decimal places: a b 500 M in kilometres 2 marks each 750 km in nautical miles 21 Find the average speed in knots for journeys of: a 84 M in 1 1 hours 2 2 marks each b 2450 km in 15 hours 22 A, B, C and D are points on the Earth’s surface. A and B lie on parallel of latitude 30° N. C and D lie on the equator. O is the centre of the Earth. ∠COD = 86° . A and C both have longitude 20° W. B and D have the same longitude. (use 1.852 km = 1M) a 1 mark Find the longitude of B. N b What is the distance from C to D in nautical miles? 1 mark B A O 0° 86° Find the distance from A to C in kilometres. 2 marks D C 20 c °W S 47 CHAPTER 3 – Measurement – Spherical geometry Measurement 3: Spherical geometry Mathletics Instant Workbooks – Series M Copyright © 3P Learning iv 23 Ignoring time zones, find the difference in time between: a London (0° ) and Bali (115° E) b 2 marks each Sri Lanka (80° E) and Jamaica (77° W) 24 If it is 4:30 a.m. on 12th of May in Toronto, Canada (80° W), what is the time and date in Johannesburg, South Africa (28° E). 3 marks 25 A plane leaves Sydney (150° E) at 8:20 p.m. and arrives in Dubai (55° E) at 6:20 a.m. local time. How long was the flight? 3 marks Total marks achieved for PART B 48 40 EXCEL HSC GENERAL MATHEMATICS REVISION & EXAM WORKBOOK Measurement 3: Spherical geometry Mathletics Instant Workbooks – Series M Copyright © 3P Learning v b 11 014 m2 19 74 m 74 4 46 D 60 C 46 90 Answers – Measurement 3: Spherical geometry A Page 1 36 1 15 cm 2 a 94.25 cm b 1 c 31.42 cm 3 13 cm 4 151° 5 84 cm 3 2 Page 37 1 9494.6 km 2 6143.6 km 3 101° 52′ 4 147° 20′ 5 286.5 cm Page 3 38 1 a G b M, H c L, B d D e X f J, P g E, K h A, F 2 a 15° N b 45° S c 60° N d 15° S e 45° S f 75° N g 15° N h 60° S i 90° N j 90° S 3 a 20° b 60° c 60° d 20° e 120° f 100° g 80° h 80° 4 a equator b 90° S, 90° N c latitude d equator 4 Page 39 1 a Greenwich b Greenwich c East, West d 0° 2 a D, F b A, H, I c G d B, C, L 3 a 30° W b 125° E c 0° d 30° W e 0° f 60° E g 80° E h 125° E i 60° E j 125° E k 0° l 30° W 4 a 155° b 30° c 80° d 80° e 155° f 155° g 65° h 90° Page 40 1 a (75° N, 0° ) b (30° N, 0° ) c (50° S, 55° E) d (75° N, 55° E) e M f U 2 a great circle b small circle 5 c great circle d great circle e small circle f great circle 3 3000 M 4 a 5100 M b 3600 M Page 6 41 1 13 963 km 2 11 170 km 3 a 52° E b i 4020 M ii 7484 km 4 a 7778 km b 8334 km Page 42 1 a 741 km b 1204 km c 1296 km d 1806 km e 2334 km f 3704 km 2 a 189 M b 518 M 7 c 259 M d 2770 M e 1404 M f 4519 M 3 a 17.5 b 19.7 c 163.6 d 45 4 a 400 b 152.38 c 460 d 265.26 5 a 525.4 b 31.3 Page 43 1 a 3 h 56 min b 0 h c 1 h 52 min 2 Monday 3 3 p.m. 4 10:40 p.m. 5 9:52 a.m. on Wednesday 17 February 8 Page 9 44 1 a 10:40 p.m. on 27 June b 8:40 a.m. on 28 June 2 7:30 p.m. 3 4:56 a.m. on Tuesday 4 7:50 a.m. on 1st of January Pages 10–11 45–46 1 D 2 A 3 A 4 B 5 B 6 B 7 B 8 C 9 D 10 D 11 B 12 C 13 B 14 C 15 C Pages 12–13 46–48 16 a 13 cm b 155° c 29.3 cm d 7261 km 17 a D b E c F 18 a (30° S, 60° W) b (60° N, 40° W) 19 a 30° b 120° 20 a 926.00 km b 404.97 M 21 a 56 knots b 88.2 knots 22 a 66° E b 5160 M c 3334 km 23 a 7h 40 min b 10 h 28 min 24 11:42 a.m. on the 12th of May 25 16 h 20 min H H Page 49 1 a T H T b 12 c i Page 50 2 3 1 ii 1 3 iii 3 5 a 2 5 d 68 95 e 27 95 f 51 190 T 1 2 1 2 R 1 3 2 4 B R 1 4 B H HHH T HHT H T H HTH HTT THH T H T TH T T TH TTT b i 3 10 R B b 1 8 c 3 8 d 7 8 e 1 8 2 2 a 3 4 ii 1 10 iii 3 5 2 a 5 11 b 3 11 c 6 11 3 a 12 13 14 21 23 24 31 32 34 41 42 43 2 3 4 1 3 4 1 2 4 1 2 3 1 3 20 b 51 380 3 190 c 5 b 5 c 1 d 5 e 5 2 4 3 0.08 18 18 6 18 9 25 1 a 24 b 120 c 720 2 mn 3 8 4 9 5 343 6 17 576 000 7 a 100 000 000 b 90 000 000 1 a 20 b 210 c 360 d 120 2 a 72 b 504 c 60 480 3 2520 4 15 600 5 990 6 9 Page 51 1 a Page 52 Page 53 199 ANSWERS Measurement 3: Spherical geometry Mathletics Instant Workbooks – Series M Copyright © 3P Learning vi
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