Evaluate :
`(cos^(2)(45^(@) + theta)+ cos^(2) (45^(@) -theta))/(tan(60^(@) + theta) xx tan(30^(@) - theta))+(cot30^(@) + sin 90^(@))xx (tan60^(@) -sec0^(@))`

What is (cos^(2)(45^(@)+theta)+cos^(2)(45^(@)-theta))/(tan(60^(@)+theta)tan(30^(@)-theta)) equal to ?

Evaluate : (cos^(2)(45+theta)+cos^(2)(45-theta))/(tan(60^(@)+theta)tan(30^(@)-theta))+cos ec(75^(@)+theta)-sec(15^(@)-theta)

Evaluate : (cos^2(45 + theta) + cos^2(45 - theta))/(tan(60^@ + theta) tan(30^@ - theta)) + cosec(75^@ + theta) - sec(15^@ - theta)

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

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

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

Prove that: (cos ec(90^(@)+theta)+cot(450^(@)+theta))/(cos ec(90^(@)-theta)+tan(180^(@)-theta))+(tan(180^(@)+theta)+sec(180^(@)-theta))/(tan(360^(@)+theta)-sec(-theta))=2