JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

1 Easy

1 of 1

Application +4 | -1

The equation

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

possesses a solution if

View answer and explanation

Correct option: B

2 \leq a \leq 6

Option B (

2 \leq a \leq 6

) is correct because the equation has a solution only when the value of

\sin x

derived from the quadratic equation lies between -1 and 1.

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