Question

3 cos 30° - 4 cos 3 30​

Answer 1

Step-by-step explanation:

4 cos3 30° – 3 cos 30° = 4 x (√3/2)3 - 3 x √3/2 = 4 x 3√3/8 - 3√3/2 = 3√3/2 - 3√3/2 = 0