JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

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Application +4 | -1

\frac{{\cos A}}{3} = \frac{{\cos B}}{4} = \frac{1}{5},\;\, - \frac{\pi }{2} < A < 0,\,\; - \frac{\pi }{2} < B < 0

then the value of

2\sin A + 4\sin B

View answer and explanation

Correct option: C

- 4

Option C (-4) is correct because after finding the values of sin A and sin B in the fourth quadrant, substituting them into the expression gives -4.

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