Question

Give some examples base on the following trigonometric formulas....

i) sin(-titha)= - sin titha

ii) cos(-titha) = cos titha

iii) tan(-titha) = - tan titha

iv) cot (-titha)= - cot titha

v) sec(-titha)= sec titha

vi) cosec (-titha)= - cosec titha

Answer 1

1) sin(-x)=-sinx
2)cos(-x)=cosx
3)tan(-x)=-tanx
4)cot(-x)=-cotx
5)sec(-x)=secx
6)cosec(-x)=-cosecx

Answer 2

QUESTIONS:

1)If the angle of theta is -60,find values of sin theta ,cos theta,sec theta and tan theta.

2)If cos theta=7/25 , and theta is in fourth quadrant, find other five trigonometric ratios.

3) For the given values of theta in following cases find all values of trigonometric ratios
a)theta =-30
b)theta=-90
c)theta =30
d)theta=-45


Hope it helps you!