If $\cos 2 x-a \sin x=2 a-7$, then range of $a$ is

JEE MATHEMATICS MCQ: FUNCTIONS

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Application +4 | -1

\cos 2 x-a \sin x=2 a-7

, then range of

a

View answer and explanation

Correct option: B

2 \leq a \leq 6

Option B (

2 \leq a \leq 6

) is correct because it is derived from the condition

-1 \leq \sin x \leq 1

after simplifying the given trigonometric equation.

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