Question

Given 3 tan 5 =1, then the value of  (A) 0 60 (B) 0 30 (C) 0 6 (D) 0 45​

Answer 1

Step-by-step explanation:

mcq questions for cbse class 10 maths introduction to trigonometry pdf

6. The value of the expression [cosec (75° + θ) – sec (15° - θ) – tan (55° + θ) + cot (35° - θ)] is

(A) 1

(B) −1

(C) 0

(D) 1/2

Answer: (C)

Explanation: Since

cosec (75° + θ) – sec (15° - θ) – tan (55° + θ) + cot (35° - θ)

= cosec (75° + θ) – cosec [90° - (15° -