[0quad sin5 theta=5sin theta-20sin^(3)theta+16sin^(5)theta],[" en "cos^(3)thetasin3 theta+sin^(3)thetasin3 theta+(3)/(4)sin theta]

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cos^(3)theta*sin3 theta+sin^(3)theta*cos3 theta=(3)/(4)sin4 theta

If sin5 theta=5sin theta-20sin^(3)theta+k sin^(5)theta then the value of k is

sin theta + sin3 theta + sin5 theta = 0

sin theta cos ^ (3) theta-cos theta sin ^ (3) theta = (1) / (4) sin4 theta

Prove that: sin theta cos^(3)theta-cos theta sin^(3)theta=(1)/(4)sin4 theta

4 sin 5 theta cos 3 theta sin 2 theta

prove sin(5 theta)=16sin^(5)(theta)-20sin^(3)(theta)+5sin(theta)

Prove that: sin4 theta=4 sin theta cos^(3)theta-4cos theta sin^(3)theta

Prove that sin theta cos^(3)theta - cos theta sin^(3) theta = (1)/(4) sin 4 theta .

Prove that: (sin^(3) theta + cos^(3) theta)/(sin theta + cos theta) = 1-sin theta cos theta