Question

I posted it in picture

Answer 1

use identity
${ \sin( \alpha ) }^{2} + { \cos( \alpha ) }^{2} = 1 \: for \: que \: 1$
so cos^2(x)+1/9=1
cos^2(x)=8/9
cosx=2√2/3 ivth quad.

since we find out cos x and sinx is given so simply divide cosx/sinx

hope this will help you..
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