JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

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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 value of

2 \sin A+4 \sin B

-a

. The value of '

a

' is

View answer and explanation

Correct option: A

Option A (4) is correct because calculating 2\sin A + 4\sin B with the given conditions results in -4, and since it's equal to -a, a = 4.

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