[2190=30^(@)" af "1484" an fin "?],[" (i) "sin3 theta=3sin theta-4sin^(3)theta]

Prove that : sin 3 theta=3 sin theta-4 sin^3 theta .

Taking theta=30^(@) , verify each of the following (i) sin 3theta=3sin theta -4sin^(3) theta (ii) cos3 theta=4cos^(3)theta-3cos theta

If sin theta=(3)/(5), then sin3 theta=

sin theta +sin 2theta+sin3theta+sin4theta=0

sin^(3)theta + sin theta - sin theta cos^(2)theta =

Solve 4sin theta sin2 theta sin4 theta=sin3 theta

Let f(theta)=sin theta(sin theta+sin3 theta)* then

If sin theta=1/2 then prove that 3sin theta-4sin^3 theta=1

(3sin theta-sin3 theta)/(3cos theta+cos3 theta)=

4sin(pi/3+theta)sin(pi/3-theta)=