Back to Main Page

Multiple Choice Questions

If sin is the geometric mean between sin and cos then cos 2 is equal to ........

Download Solution PDF

If sin $\beta$ is the geometric mean between sin $\alpha$ and cos $\alpha$ , then cos 2 $\beta$ ? is equal to

$2sin^{2}\left ( \frac{\pi}{4} -\alpha \right )$

$2cos^{2}\left ( \frac{\pi}{4} -\alpha \right )$

$2cos^{2}\left ( \frac{\pi}{4} +\alpha \right )$

$2sin^{2}\left ( \frac{\pi}{4} +\alpha \right )$

Explanation:

$2sin^{2}\left ( \frac{\pi}{4} -\alpha \right )$

By: Swaminath Yadav

Profile ResourcesReport error

Submit Error

Let's Discuss

Explore
Micro
Courses

Free
Video
Courses

Free
Test
Series

Free
PDF
Documents