Step-by-step explanation:
with reference angle 30°
base (b) = 4√3
Hypotenuse (h) =?
Now
cos 30° = b/h
√3 / 2 = 4√3/ h
Cross multiply
√3h = 4√3 * 2
√3h = 8√3
h = 8√3/√3
Therefore h = 8
