Trigonometry

LSSSSB Non-Technical · Mathematics · 96 practice questions with answers and explanations: 47 Easy, 49 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Find the value of cot 90°.

  1. 0
  2. 1
  3. 0.5
  4. Undefined
Show answer

Answer: A. cot 90° = cos 90°/sin 90° = 0/1 = 0.

Sample Easy question 2

Find the value of sin 90° + cos 90°.

  1. 1
  2. 0.5
  3. 1.5
  4. 0
Show answer

Answer: A. sin 90° + cos 90° = 1 + 0 = 1.

Sample Easy question 3

Find the value of tan 45° + cot 45°.

  1. 2.5
  2. 2
  3. 1
  4. 1.5
Show answer

Answer: B. tan 45° + cot 45° = 1 + 1 = 2.

Sample Medium question 4

If tan θ = 7/24, find sec θ.

  1. 7/25
  2. 25/7
  3. 24/25
  4. 25/24
Show answer

Answer: D. sec²θ = 1+49/576 = 625/576, so sec θ = 25/24.

Sample Medium question 5

Evaluate sin 30° × cos 60° + cos 30° × sin 60° (this equals sin(30°+60°)).

  1. 1
  2. 0.87
  3. 0.5
  4. 1.5
Show answer

Answer: A. This is sin(30°+60°) = sin 90° = 1.

Sample Medium question 6

Evaluate cos 60° × cos 30° + sin 60° × sin 30° (this equals cos(60°-30°)).

  1. 0.5
  2. 1
  3. 1.5
  4. 0.87
Show answer

Answer: D. This is cos(60°-30°) = cos 30° ≈ 0.87.

More Mathematics topics for LSSSSB Non-Technical

Related articles