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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

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