Question

If 0 = 30°, verify the following:
(i) cos30 = 4cos'o - 3coso

Answer 1

Answer:

As we know that :-

Step-by-step explanation:

cos30°=√3/2

AND

The in question the value of 0 = 30°

so,

√3/2 = 4 × 30° - 3 × 30°

√3/2= 120° - 90°

√3/2= 30°

so,

√3/2 = cos 30°

so, cos 30°

HENCE PROVED

I HOPE IT WILL HELPFUL TO YOU