Question

if cos theta= √3÷2 find sin theta

Answer 1

cos^2 a + sin^2 a =1
sina=√(1-cos^2 a)
sina=√(1-3/4)
sina=1/2
a=30

Answer 2

1- cos²theta= sin² theta

1-3/4= sin²theta

1/4= sin²theta

sin theta= 1/2

theta= 30°

I HOPE IT HELPFUL