RRB NTPC · Question 66
cosec (90° - θ) = ?
Show answer & explanation
Answer: (C) sec θ
Explanation
cosec(90° − θ) = 1/sin(90° − θ) = 1/cos θ = sec θ.
Railways PYQCBT 1 2016
RRB NTPC · Question 66
Answer: (C) sec θ
cosec(90° − θ) = 1/sin(90° − θ) = 1/cos θ = sec θ.