Question

If cos theta =3/4 find sin (90°-0)

Answer 1

Below

Explanation:

sin (90 -0) = sin (90) = 1

Remember sin^2 + cos^2 =1

for theta sin2 + (3/4)^2

sin^2 = 1 - 9/16 = 7/16

sin (theta) = ± sqrt(7) /4