JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

1 of 1

Application +4 | -1

\sin x\,\,\cos x\,\,\cos \,\,2x = \lambda

has a solution, then

\lambda

lies in the interval

View answer and explanation

Correct option: A

\left[ { - 1/4,\;\,1/4} \right]

Option A is correct because the range of

\lambda

is found by considering the range of the sine function.

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