Question

Please help it's urgent
Ch - Trigonometry
Class 10th​

Answer 1

Answer:

Option A) 0

Step-by-step explanation:

Here is your answer ---

sinФ = $\frac{1}{2}$ given. We know from the trigonometric table that sinФ = $\frac{1}{2}$ for the value of Ф = 30°. So, 3 cos 30° - 4 $cos^{3}$ 30° is what we have to find.

So substituting the values, we get

3 x root3/2 - 4 x (root3/2) ^3

3 root3 /2  - 4 x 3 root3 /8

12 root 3/8 - 4 x 3 root3/8

(12 root3 - 12 root3) /8

0/8

0