By induction, value of the expression \Cos \,\theta\Cos \,2\theta \,\Cos 4\theta ...... \Cos (2^{\n-1}\theta ) is equal to

Correct Answer is : Sin(2nθ)2nSinθ

\frac{Sin (2^n\theta)}{2^n Sin \theta}

\frac{Cos (2^n\theta)}{2^nCos\theta}

\frac{Sin (2n\theta)}{Sin\theta}

\frac{Cos (2n\theta)}{Cos\theta}

SRMJEE 2016 Paper with key

Question : 81 of 155

Marks: +1, -0

By induction, value of the expression Cos‌θ‌Cos‌2θ‌Cos‌4‌θ......Cos(2n−1θ) is equal to

Go to Question:

Prev Question

Next Question