Question

Question 7 Find the value of the trigonometric function cosec (–1410°)

Class X1 - Maths -Trigonometric Functions Page 63

Answer 1

Cosec(-1410°)
We know,
Cosec(-∅°) = -cosec∅°
So,
= -cosec(4×360°-30°)

We know,
Cosec(n×360°-∅°) = -cosec∅°

= -{-cosec(30°)}
=cosec30°
= 1/sin30°
=1/(1/2)
= 2