JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

1 Hard

1 of 1

Analyzing +4 | -1

\cos \,\,2x + k\,sin\,\,\;x = 2k - 7

has a solution for

View answer and explanation

Correct option: A

2 \le k \le 6

Option A (

2 \le k \le 6

) is correct because this range of

k

ensures that the value of

\sin x

obtained from the equation lies between -1 and 1, which is a necessary condition for a solution to exist.

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