Trigonometry

Ladakh Police Constable · Mathematics · 96 practice questions with answers and explanations: 47 Easy, 49 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Find the value of sin 90°.

  1. Undefined
  2. 0
  3. 1
  4. 0.5
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Answer: C. sin 90° = 1.

Sample Easy question 2

Find the value of sin 0°.

  1. 0
  2. 1
  3. 0.5
  4. Undefined
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Answer: A. sin 0° = 0.

Sample Easy question 3

Find the value of cos 90°.

  1. Undefined
  2. 0.5
  3. 0
  4. 1
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Answer: C. cos 90° = 0.

Sample Medium question 4

If sin θ = 7/25 (θ acute), find cos θ.

  1. 20/25
  2. 7/25
  3. 22/25
  4. 24/25
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Answer: D. This is a 7-24-25 right triangle, so cos θ = 24/25.

Sample Medium question 5

If sin θ = 9/41 (θ acute), find cos θ.

  1. 37/41
  2. 35/41
  3. 40/41
  4. 39/41
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Answer: C. This is a 9-40-41 right triangle, so cos θ = 40/41.

Sample Medium question 6

If sin θ = 20/29 (θ acute), find cos θ.

  1. 21/29
  2. 19/29
  3. 20/29
  4. 18/29
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Answer: A. This is a 20-21-29 right triangle, so cos θ = 21/29.

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