Printable · GCSE Foundation · ages 14-16
Exact trigonometric values worksheet — GCSE Foundation
Fifteen questions on "exact trigonometric values" — DfE statement G21. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.
Exact trigonometric values worksheet — GCSE Foundation
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- 1.Write down the exact value of tan 45°.
- 2.A ladder rests against a wall, making an angle of 60° with the ground. The ladder is 2 m long. Using the exact value of sin 60°, work out how high up the wall the ladder reaches, giving your answer in centimetres.
- 3.In triangle ABC, angle ABC = 90° and angle BAC = 30°. The hypotenuse AC = 12 cm. Work out the exact length of AB.
- 4.Write down the exact value of sin 60°.
- 5.Write down the exact value of cos 45°.
- 6.Here are four trigonometric ratios of special angles. Write down the one that does not have a value.
- 7.Write down the exact value of cos 30°.
- 8.A cable supporting a flagpole is anchored to the ground 5 m from the base of the pole. The cable makes an angle of 60° with the ground. Using the exact value of tan 60°, work out the exact height of the flagpole.
- 9.Work out the exact value of (cos 45°)² + (sin 45°)².
- 10.Work out the exact value of tan 30° + tan 30°.
- 11.Write down the exact value of tan 0°.
- 12.Three of these are rational numbers and one is irrational. Write down the one that is irrational.
- 13.Write down the exact value of tan 60°.
- 14.A ramp rises at 30° to the horizontal. Its sloping surface is 4.8 m long. Safety rules say the vertical rise of a ramp must be no more than 2.5 m. Work out how far below that limit the rise of this ramp is.
- 15.Triangle DEF has a right angle at E. Angle DFE = 60° and EF = 9 cm. Work out the exact length of DE.
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