" (d): "cos^(2)((pi)/(8)-(theta)/(2))-sin^(2)((pi)/(8)+(theta)/(2))

The value of (sin theta)/(sin^(2)((pi)/(8)+(theta)/(2))-sin^(2)((pi)/(8)-(theta)/(2)))

The value of (sin theta)/(sin^(2)((pi)/(8)+(theta)/(2))-sin^(2)((pi)/(8)-(theta)/(2)))

Prove that sin ^(2) ((pi)/(8) + (theta)/(2)) - sin ^(2) ((pi)/(8) - (theta)/(2)) = sin ""(pi)/(4) sin theta.

Evaluate sin^(2)((pi)/(8)+(theta)/(2))-sin^(2)((pi)/(8)-(theta)/(2))

If : sin^(2) ((pi)/(4) + (theta)/(2)) - cos^(2) ((pi)/(4) + (theta)/(2))= A) sin theta B) cos theta C) sin 2 theta D) cos 2 theta

If quad cos^(2)((3 pi)/(8)+theta)-sin^(2)((pi)/(8)-theta),b=sin(290^(@)-theta)cos(160^(@)+theta)+cos(290^(@)-theta)sin(160 and c=os200^(@)cos160^(@)-sin200^(@)sin160^(@) then find the value of a+b+c

cos^(2)(""(pi)/(6) + theta ) -sin^(2)""((pi)/(6) - theta ) =

Find the value of cos^(2) (pi/8 - theta/2) - sin^(2) (pi/8 + theta/2).

The value of ( sin theta )/( sin^(2) (pi//8 + theta //2)-sin^(2)(pi//8- theta //2))=

Prove that, sin^(2) (pi/8 + theta/2) - sin^(2)(pi/8 - theta/2) = 1/sqrt2 sin theta