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  4. The sign of the product sin 2 sin 3 sin 5 is-

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Q. The sign of the product $\sin 2 \sin 3 \sin 5$ is-

Trigonometric Functions

Solution:

Clearly $\sin 2$ and $\sin 3$ are positive (both angles in II quadrant) where as $\sin 5$ is negative (IV quadrant)