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Free · Class 10 · 5 worksheets · answer keys · practise online · set 36

Trigonometry worksheets — Class 10, with answers

Free Class 10 trigonometry worksheets: trigonometric ratios, find other ratios, standard angle values, simplifying trig identities and heights and distances (applications) — with answers.

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Trigonometric ratios (Class 10)Find the other ratios (Class 10)Standard angles (Class 10)Simplify the identities (Class 10)Heights and distances (Class 10)

Trigonometric ratios

Class 10 · Worksheet 1 · set 36
Name:Date:Score:    / 8

Find the ratio (use Pythagoras for the missing side).

  1. In △ABC, ∠B = 90°, AB = 4 cm, BC = 3 cm. Find cot A.
  2. In △ABC, ∠B = 90°, AC = 13 cm, BC = 12 cm. Find cosec A.
  3. In △ABC, ∠B = 90°, AB = 8 cm, BC = 15 cm. Find tan A.
  4. In △ABC, ∠B = 90°, AC = 34 cm, BC = 16 cm. Find tan A.
  5. In △ABC, ∠B = 90°, AC = 25 cm, BC = 7 cm. Find sec A.
  6. In △ABC, ∠B = 90°, AC = 17 cm, BC = 15 cm. Find cosec A.
  7. In △ABC, ∠B = 90°, AC = 58 cm, BC = 40 cm. Find sec A.
  8. In △ABC, ∠B = 90°, AB = 72 cm, BC = 21 cm. Find cot A.

Find the other ratios

Class 10 · Worksheet 2 · set 36
Name:Date:Score:    / 8

Solve.

  1. If sin A = 3/5, find cos A and tan A.
  2. If tan A = 4/3, find sin A and cos A.
  3. If sin A = 12/13, find cos A and tan A.
  4. If tan A = 7/24, find sin A and cos A.
  5. If tan A = 8/15, find sin A and cos A.
  6. If tan A = 5/12, find sin A and cos A.
  7. If tan A = 21/20, find sin A and cos A.
  8. If sin A = 4/5, find cos A and tan A.

Standard angles

Class 10 · Worksheet 3 · set 36
Name:Date:Score:    / 10

Find the value.

  1. 3 sin² 30° − 3 cosec 30° + tan² 60° =
  2. sin² 60° + cos 90° + 2 sin² 60° =
  3. sin² 45° + 2 cos² 60° + sin² 60° =
  4. 2 sin 90° − 3 tan² 60° + 3 cos² 30° =
  5. sin 90° + sin 90° =
  6. 2 sin² 60° + 2 cos² 30° =
  7. cosec² 60° + sin² 60° =
  8. tan 45° + 2 sin 30° + 3 cot 45° =
  9. cos² 45° + 2 sin² 30° + cos² 60° =
  10. sec² 45° − 3 tan² 30° + 2 tan 45° =

Simplify the identities

Class 10 · Worksheet 4 · set 36
Name:Date:Score:    / 12

Simplify.

  1. sec²θ − tan²θ
  2. 1 + cot²θ
  3. sin²θ + cos²θ
  4. cosθ tanθ
  5. (1 − sin²θ) sec²θ
  6. cosec²θ − cot²θ
  7. (1 − cos²θ) cosec²θ
  8. sin 60° cos 30° + cos 60° sin 30°
  9. tanθ × cotθ
  10. cosθ × secθ
  11. sin(90° − θ)
  12. tan(90° − θ)

Heights and distances

Class 10 · Worksheet 5 · set 36
Name:Date:Score:    / 6

Solve. Draw a figure first.

  1. From a point 6 m from the foot of a tower, the angle of elevation of its top is 45°. Find the height of the tower.
  2. A ladder 26 m long leans against a wall, making an angle of 60° with the ground. How high up the wall does it reach?
  3. From a point 24 m from the foot of a tower, the angle of elevation of its top is 30°. Find the height of the tower.
  4. From a point 9 m from the foot of a tower, the angle of elevation of its top is 45°. Find the height of the tower.
  5. A ladder 6 m long leans against a wall, making an angle of 30° with the ground. How high up the wall does it reach?
  6. A kite is flying on a string 8 m long. The string makes an angle of 30° with the ground. Find the height of the kite.

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Questions

How do I remember the trigonometric values?

Write 0, 1, 2, 3, 4 under 0°, 30°, 45°, 60°, 90°, divide each by 4 and take the square root — that gives sin. Write the same list backwards for cos.

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