Question

Find the value of √(1-cosA/1+cosA)
If cotA=8/15

Answer 1

$\cot(a) = \frac{8}{15}$

then by Pythagoras' theorem

we can find the other unit

√15² - 8²

√225 - 64

√289

17

then cos A =

$\frac{8}{17}$

$\sqrt{ \frac{(1 - \frac{8}{17}) }{(1 + \frac{8}{17}) } } = \sqrt{ \frac{ \frac{9}{17} }{ \frac{25}{17} } } = \sqrt{ \frac{9}{25} } = \frac{3}{5}$

HOPE THIS HELPS YOU

Answer 2

3/5 is the answer

I hope it help you