Question

cos(theta)×√{1-cos2(theta)}​

Answer 1

Step-by-step explanation:

cos ( theta) × √ 1- cos 2( theta )

but ..cos 2 ( theta ) = 1- 2 sin^2( theta)

= 2 sin ^2 ( theta ) = 1- cos 2 ( theta )

....then

cos ( theta ) × √2 sin^2 ( theta )

cos ( theta ) × √2 × sin ( theta )

then ....

= √2× sin ( theta ) cos ( theta ) ...

I hope you understand ....