Question

if sin theta is equals to 3/4 then, find the value of cos​

Answer 1

sin²theha + cos²thetha = 1

9/16 + cos²thetha = 1

cos ²thetha = 1-9/16 = 7/16

cos thetha = √7/4 Ans.

Answer 2

Answer:

sin theta = 3/4=p/h

so b= √16-9= √5

so cos theta = b/h=√5/4

hope it helps u☺☺