cosec(-30°) =___________
A. -2
B. 2
C. 2/√3
D. -2/√3
This question was posed to me in an interview for job.
The question is from Trigonometric Functions topic in portion Trigonometric Functions of Mathematics – Class 11
The correct choice is A. -2
The explanation: We know, cosec(-x) = cosec x
So, cosec(-30°) = -cosec 30°=-2.