Question

Hey guys

if sin theta=1/3,cos theta will Be-?

if u know the answer then only answer it otherwise leave it plz.

Answer 1

Sin^2 theta+cos^2theta=1
(1/3)^2+cos^2theta=1
1/9+cos^2theta=1
Cos^2 theta=1-1/9=8/9
Costheta=root over of 8/9=2root2/3
Hope that helps you :-)