simplify
`((1+tan(theta/2))/(1-tan(theta/2)))=`

simplify (1+tan^(2)theta)+(1+(1)/(tan^(2)theta))

Simplify: (1+tan^(2)theta)(1-sintheta)(1+sintheta)

Prove that (1+sin2theta)/(1-sin2theta)=((1+tantheta)/(1-tan theta))^(2)

If sum_(n=1)^(2013)tan(theta/(2^(n)))sec((theta)/(2^(n-1))) = tan((theta)/(2^(a)))-tan((theta)/(2^(b))) then (b+a) equals

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

Show that (1+tan .theta/2)/(1-tan. theta/2)=(1+sintheta)/(cos theta)=tan(pi/4+theta/2)

Find the sum n terms of seires tan theta+1/2tan(theta/2 )+1/(2^2)tan(theta/(2^2))+1/(2^3)tan(theta/(2^3))+....

Prove the identity ((1-tan theta)/(1-cot theta))^(2)=tan^(2)theta

(1+tan^2theta) sin^2theta

If A=[(1,tan(theta/2)),(-tan(theta/2),1)] and AB=I, then B= (A) {cos^2 (theta/2)}A (B) {cos^2(theta/2)}A\' (C) {cos^2(theta/2)}I (D) none of these