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If sin A + sin B + sin C = 3, then cos ...

If sin A + sin B + sin C = 3, then
cos A + cos B + cos C is equal to

A

3

B

2

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
D
Given sin A + sin B + sin C =3
sin A + sin B + sin C = 1" " therefore -1 le sin x le 1`
` Rightarrow A =B = C= pi/2 `
` Rightarrow cos A + cos B + cos C =0`
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