" If "sin(theta+18^(@))=cos60^(@)(0

If : sin (theta - 30^(@))+cos (theta - 60^(@))=k * sin theta, "then" : k=

I : cos^2 theta + cos^(2) (60^@ + theta ) + cos^(2) (60^@ - theta ) = 3//2 II : sin^(2) theta + sin^(2)(60^(@) + theta ) + sin^(2)(60^(@) - theta ) =3//2

Prove that: sin(60^(@)-theta)cos(30^(@)+theta)+cos(60^(0)-theta)sin(30^(@)+theta)=1

Evaluate sin(30^(@)+theta)-cos(60^(@)-theta) .

Evaluate sin(30^(@)+theta)-cos(60^(@)-theta) .

If sin(60^(@)+theta)+sin(60^(@)-theta)+sin theta=0 , where 0 (A) 0 (B) 1 (C) 2 (D) 3

Find the value of sin(60+ theta )-cos(30-theta)

sin theta -cos theta=0

If 4 sin(60^(@) + theta ) sin (60^(@) - theta )-1=k cos 2 theta , the value of k is