Trigonometry Exam Questions - Web Maths
Trigonometry Exam Questions
Triangles ABC and PQR are similar.
AC = 3.2 cm, AB = 4 cm and PR = 4.8 cm.
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Explain why sin x = 0.8 (1 mark)
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For a ladder to be safe it must be inclined at between 70° and 80° to the ground.
The diagram shows a ladder resting against a wall.
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Is it safe? You must show your working. (3 marks)
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PQR is a right-angled triangle. PQ = 11 cm and QR = 24 cm.
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Calculate the size of angle PRQ. (3 marks)
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ABC and ACD are right-angled triangles. AD is parallel to BC.
AB = 12 cm, BC = 5 cm and AD = 33.8 cm. Calculate the size of angle ADC(4 marks)
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The diagram shows a triangle ABC.
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Angle A = 20° and angle C = 90° AB = 32m
Calculate the height BC. (3 marks)
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The diagram shows a right-angled triangle DEF.
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EF = 10cm Angle F = 50°
Use the table of data to work out the length of DE. (3 marks)
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The diagram shows two right-angled triangles.
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AD = 15 cm and CD = 6 cm.
(a) Given that cos x° = ⅔ , calculate the length BD. (2 marks)
(b) Find the value of sin y°. (3 marks)
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(a) ABC is a right-angled triangle.
AB = 5.1cm CAB = 48°
Find the length of BC (marked x in the diagram).
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Give your answer to a suitable degree of accuracy. (4 marks)
(b) PQRS is a parallelogram.
PQ = 5.1cm PS = 6.8cm QPS = 48°
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Calculate the area of PQRS. (2 marks)
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BC = 125 m. Angle CAB = 33°.
Find the length of AC (marked x in the diagram).
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Give your answer to an appropriate degree of accuracy. (4 marks)I
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