Question
If $\sin \alpha+\sin \beta+\sin \gamma=3$, then $\cos \alpha+\cos \beta+\cos \gamma$ is(a) 1(b) 0(c) $-1$(d) 2(1) $2^{3} 0$?n
Step 1
We know that the maximum value of $\sin x$ is 1. Therefore, for the sum to be 3, we must have $\sin \alpha=\sin \beta=\sin \gamma=1$. Show more…
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