" 79."(3cos theta+cos3 theta)/(3sin theta-sin3 theta)=

(3 cos theta+cos 3 theta)/(3 sin theta-sin 3 theta)=

(3 cos theta + cos 3 theta )/( 3 sin theta - sin 3 theta ) =

(cos theta+cos3 theta)/(sin theta-sin3 theta) is equal to:

(3sin theta-sin3 theta)/(3cos theta+cos3 theta)=

Prove that (cos^3 theta -cos 3 theta)/(cos theta)+ (sin^3 theta+sin3 theta)/(sin theta)=3 .

Prove that (cos^3 theta-sin^3 theta)/(cos theta-sin theta) = 1+cos theta sin theta

(cos4 theta+cos3 theta+cos2 theta)/(sin4 theta+sin3 theta+sin2 theta)=cot3 theta

Prove that : (cos4 theta+cos3 theta+cos2 theta)/(sin4 theta+sin3 theta+sin2 theta)=cot3 theta

If (sin theta + cos theta)/(sin theta - cos theta)=3 , then the value of sin^(4)theta - cos^(4)theta is:

Prove that ( cos theta + cos 2 theta + cos 3 theta + cos 4 theta)/(sin theta + sin 2 theta + sin 3 theta + sin 4 theta)= cot ""(5theta)/(2).