App Logo

No.1 PSC Learning App

1M+ Downloads
If cos A + cos B + cos C = 3, then what is the value of sin A + sin B + sin C?

A1

B2

C0

D-1

Answer:

C. 0

Read Explanation:

Cos 0° = 1 Sin 0° = 0 cos A + cos B + cos C = 3 cos A = cos B = cos C = 1 A = B = C = 0° [Cos 0° = 1] sin A + sin B + sin C = sin 0° + sin 0° + sin 0° = 0


Related Questions:

If sin A + sin²A = 1, then the value of the expression (cos² A + cos⁴A) =
The length of the shadow of a pole is √3 times its height. The elevation of the sum must be
If 4θ is an acute angle, and cot 4θ = tan (θ - 5°) , then what is the value of θ?

If 3 sec2 x - 4 = 0, then the value of x (0 < x < 90°)

In the figure central angle of arc APB is 120°. And the central angle of arc MQN is 50° what is the measure of <C?

WhatsApp Image 2024-11-30 at 15.13.06.jpeg