Question

If sin θ =
5
---
13

then find the value of cos θ?​

it's 5 upon 13

Answer 1

Step-by-step explanation:

sin²theta+cos²theta=1

(5/13)²+cos²theta=1

cos²theta=1 - 25

------

169

=169 - 25

-----------

169

=144

-----

169

therefore,

cos²theta=144

------

169

so,

cos theta=12

-----

13