sin(45+theta)-cos(45-theta)=............

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

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

If 2 cos ^(2) theta - 2 sin ^(2) theta =1, then theta = ............. A) 15^(@) B) 30^(@) C) 45^(@) D) 60^(@)

What is the value of [2 sin (45 +theta) sin (45 -theta)]//cos 2 theta ? [2 sin (45 +theta) sin (45 -theta)]//cos 2 theta का मान क्या है?

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

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

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

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

Prove that sin (45^(@) + theta) - sin (45^(@) - theta) = sqrt(2) sin theta

If 2 theta+45o and 30o-theta are acte angles,find the degree measures of theta satisying sin(2 theta+45o)=cos(30o-theta)