Step-by-step explanation:
With reference angle 30°
perpendicular (p) = 20
base (b) = x
hypotenuse (h) = y
Now
sin 30° = p / h
1 / 2 = 20 / y
y = 40
Again
cos 30° = b / h
√3 / 2 = x / 40
x =40 * √3 / 2
x = 20√3
Hope it will help :)
