Reduction formula ( 90 - theta ),( 90+theta),(180 - theta),(180+theta) and examples

sin(90+theta)+cos(90-theta)+tan(180-theta)+cot(180+theta)

sin theta cos(90^@ -theta) +cos theta sin(90^@ -theta) = ?

tan^(2)(90^(@) - theta) - cosec^(2) theta =

If 0lt theta lt 90^(@) , the (sin theta+cos theta) is :

If tan theta=1"then tan"(90-theta)=?

Evaluate : sin theta cos theta - (sin theta cos (90^(@) - theta) cos theta)/( sec (90^(@) - theta)) - (cos theta sin (90^(@) - theta) sin theta)/( cosec (90^(@) - theta))

sin theta cos(90^(@)-theta)+cos theta sin(90^(@)-theta)

What is the value of [tan^2 (90 - theta) - sin^2 (90 - theta)] cosec^2 (90 - theta) cot^2 (90 - theta) ?

What is the value of [tan^2 (90- theta)-sec^2 (90 - theta)] tan^2 (90- theta) cot^2 (90 -theta) ?