(cos3 theta)/(2cos2 theta-1)=(1)/(2)" if "

(cos3theta)/(2cos2theta-1)=

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

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

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

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

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

The value (2cos theta-1)(2cos2 theta-1)(2cos4 theta-1)(2cos8 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)