Question

Find the value of $cos^2\dfrac{\pi}{16}+cos^2\dfrac{3\pi}{16}+cos^2{5\pi}{16}+cos^2\dfrac{7\pi}{16}$​

Answer 1

Answer:

Value = 2

Explanation :

Refer the attached picture.

Answer 2

Answer:

hope it is helpful answer is given uper side