`tan(45^(@)+ theta )*tan(45^(@)-theta)=`

Prove any of the following: tan (45^@+theta)tan (135^@+theta)=-1

(1-tan^(2)(45^(@)-theta))/(1+tan^(2)(45^(@)-theta))=

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)

If tan theta + tan(60^(@)+theta)+tan (120^(@)+theta)=3 , then theta =

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

cot(45^@+theta)cot(45^@-theta)=