If `cot theta = (2mn)/(m^2-n^2)` then `cos theta` equals

If sin theta = (2m n)/(m^(2) + n^(2)) , find the value of (sin theta cot theta)/(cos theta)

If theta =(pi)/(2 ^(n) +1), then cos theta cos 2 theta cos 2^(2) theta …cos 2 ^(n-1)theta is equal to

If cos theta-sin theta=m and cos theta+sin theta=n then prove that (m^2-n^2)/(m^2+n^2)=-2sin theta cos theta

If sec theta=(m+n)/(2sqrt(mn)) find sin theta

If 2 cot theta =3 , then what is (2 cos theta -sin theta)/(2 cos theta + sin theta) equal to ?

If cos theta= (2sqrt(mn))/(m+n) , find the value of sin theta (given m > n )

If theta=pi/(2^n+1) then cos theta cos 2 theta cos 2^(2) theta...... Cos2^(n-1) theta is equal to

If tan((pi)/(2) sin theta )= cot((pi)/(2) cos theta ) , then sin theta + cos theta is equal to