Question

Expand cos 60 in terms of sin e​

Answer 1

Answer:

cos 60= 1/√2 = base / perpendicular

sin = perpendicular / hypotenuse

by Pythagoras theoram

h^2 = b^2 + p^ 2

h^ 2 = 1 + 2

h = √3

sin = p / h

√ 2/ √ 3