[" Q.",(cos3 theta)/(2cos2 theta-1)=(1)/(2)" if "]

(cos 3theta)/(2cos 2theta-1)=(1)/(2) if

(cos3theta)/(2cos2theta-1)=(1)/(2) if

(cos3 theta)/(2cos2 theta-1)=(1)/(2) if (n in1)

1+cos theta=2cos^(2)theta

cos theta cos2 theta cos3 theta=(1)/(4)

The value of (cos3 theta)/(2cos2 theta-1) is equal to cos theta(b)sin theta (c) tan theta(d) none of these

Prove that: (2cos2 theta+1)/(2cos theta+1)=(2cos theta-1)(2cos2 theta-1)(2cos2^(2)theta-1)...(2cos2^(n-1)theta-1)

Prove that, (2 cos theta - 1)(2 cos 2 theta-1)(2 cos2^(2) theta-1)...(2 cos 2^(n-1) theta-1) = (2 cos 2^(n) theta + 1)/(2 cos theta + 1)

Prove that : (2 cos 2^n theta + 1)/(2 cos theta +1) = (2 cos theta -1) (2 cos 2theta -1) (2 cos 2^2 theta -1) … (2 cos 2^(n-1) theta -1)

Prove that : (2 cos 2^n theta +1)/(2cos theta +1)= (2cos theta-1)(2cos 2 theta-1) (2cos 2^2 theta-1)............ (2cos 2^(n-1)theta-1) .