" (iii) "tan theta+tan(90^(@)-theta)=sec theta*sec(90^(@)-theta)

tan theta+tan(90^(@)-theta)=sec theta xx sec(90^(@)-theta)

Prove that : tantheta+tan(90^(@)-theta)=sectheta*sec(90^(@)-theta)

Prove that : tantheta+tantheta+tan(90^(@)-theta)=sectheta*sec(90^(@)-theta)

Prove the following: (cos(90^(@)-theta)sec(90^(@)-theta)tan theta)/(cos ec(90^(@)-theta)sin(90^(@)-theta)cot(90^(@)-theta))+(tan(90^(@)-theta))/(cot theta)=2

(cot(90^(@)-theta)sin(180^(@)-theta)sec(360^(@)-theta))/(tan(180^(@)+theta)sec(-theta)cos(90^(@)+theta))

Prove that : (cot(90^(@)-theta))/(tantheta)+("cosec"(90^(@)-theta)sintheta)/(tan(90^(@)-theta))=sec^(2)theta