RRB NTPC · Question 91
If sinθ = 40/41, then cotθ is A. 40/9 B. 9/40 C. 9/41 D. 41/9
Show answer & explanation
Answer: (C) B
Explanation
sin θ = 40/41, so cos θ = √(1 − 1600/1681) = 9/41. Then cot θ = cos θ/sin θ = 9/40.
Railways PYQCBT 1 2016
RRB NTPC · Question 91
Answer: (C) B
sin θ = 40/41, so cos θ = √(1 − 1600/1681) = 9/41. Then cot θ = cos θ/sin θ = 9/40.