Question

if sin thita =20/29 then find cos theta​

Answer 1

Answer:

Cos theta = 21/29

We know,

(sin theta) + (cos theta) = 1

(20/29)2 + (cos theta) = 1

(cos theta) = 1 - (20/29)2

(cos theta) = 1- 400/841

(cos theta)2 = 441/841

cos theta = 21/20 ....(taking square root)