`(sin^3theta-cos^3theta)/(sintheta-costheta)-(costheta)/(sqrt(1+cot^2theta))-2tanthetacottheta=-1` if

(sin^(3) theta-cos^(3) theta)/(sin theta - cos theta)- (cos theta)/sqrt(1+ cot^(2) theta)-2 tan theta cot theta=-1 if

(1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=?

(sintheta+sin2theta)/(1+costheta+cos2theta)

Prove that (sintheta +sin2theta)/(1+costheta +cos2theta)=tantheta

Prove that (1-costheta +cos2theta )/(sin2theta -sintheta)=cottheta

Solve (3 sin theta-sin 3 theta)/(sin theta)+(cos 3 theta)/(cos theta)=1 .

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

Solve sin2theta+costheta=0

(1+cot^(2)theta)(1-costheta)(1+costheta)= ……… .

Prove that (sin(90^(@)-theta))/(1+sintheta)+(costheta)/(1-cos(90^(@)-theta))=2sectheta