Show :
`1 - Sin^4theta = Cos^2theta ( 1 + Sin^2theta )`

Show : Sin^4theta - Cos^4theta = Sin^2theta - Cos^2theta

sin^2theta+cos^4theta=cos^2theta+sin^4theta

The value of (1-2 sin^2 theta cos^2 theta )/(sin^4 theta +cos^4 theta )-1 is: (1-2 sin^2 theta cos^2 theta )/(sin^4 theta +cos^4 theta )-1 का मान है :

Prove that-: cos^4theta/(1-sin^4theta)=(1-sin^2theta)/(1+sin^2theta)

Show that ((1 + cos theta - sin ^(2) theta)/( sin theta (1 + cos theta ))) = cot theta

If 3 cot theta= 2 , show that ((4 sin theta - 3 cos theta ))/((2 sin theta + 6 cos theta))=(1)/(3)

1- (sin ^ (2) theta) / (1 + cos theta) + (1 + cos theta) / (sin theta) - (sin theta) / (1-cos theta) - (1) / (sec theta)

sin^(4) theta + 2 cos^(2) theta (1 - (1)/( sec^(2) theta)) + cos ^(4) theta =