" 1."sin4 theta-sin2 theta=cos3 theta" ."

Solve sqrt(3)cos theta-3sin theta=4sin2 theta cos3 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

The solution of (3sin theta-sin3 theta)/(1+cos theta)+(3cos theta+cos3 theta)/(1-sin theta)=4sqrt(2)cos(theta+(pi)/(4))

Show that :((cos theta-cos3 theta)(sin8 theta+sin2 theta))/((sin5 theta-sin theta)(cos4 theta-cos6 theta))=1

Prove that: sin4 theta=4 sin theta cos^(3)theta-4cos theta sin^(3)theta

The value of (2 (sin2 theta-2 cos^(2)theta-1))/(cos theta-sin theta-cos 3 theta +sin 3 theta)=

sin theta+sin2 theta+sin3 theta=1+cos theta+cos2 theta

Show that ((cos theta - cos 3theta)(sin 8theta + sin 2 theta))/((sin 5 theta - sin theta)(cos 4 theta - cos 6 theta)) = 1

Show that ((cos theta - cos 3 theta) (sin 8 theta + sin 2 theta))/((sin 5 theta - sin theta) (cos 4 theta- cos 6 theta))=1