JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

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Application +4 | -1

\mathop {\max }\limits_{x\; \in \;R} \,\;\left\{ {5\,\,\sin \,\,x + 3\,\,\sin \,\,\left( {x - \theta } \right)} \right\} = 7

, then

\theta =

View answer and explanation

Correct option: A

2\;n\;\pi \,\, \pm \,\,\frac{\pi }{3},\,\,n \in Z

Option A (

2\;n\;\pi \\; \pm \\; \frac{\pi }{{3}},\\;n \in Z

) is correct because it satisfies the condition where the maximum value of the expression is 7.

More Questions from TRIGONOMETRIC EQUATIONS

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\sin \,\,x\,\,\;cos\,\,3x = \sin \,\,3x\,\,\cos \,\,5x

\left[ {0,\;\,\frac{\pi }{2}} \right]

\left( {x,\,y} \right)

x,\,\,y \in \left[ {0,10} \right]

\left( {\sqrt {{{\sin }^2} - \sin \,\,x + \frac{1}{2}} } \right){2^{{{\sec }^2}y}}\,\, \cdot \,\, \le 1

\mathrm{X}

\theta \rightarrow \frac{\pi}{2}

\sin x+\cos x=\frac{\sqrt{7}}{2}

x \in\left[0, \frac{\pi}{4}\right]

\tan \frac{x}{2}

\tan \frac{\pi}{5}+2 \tan \frac{2 \pi}{5}+4 \cot \frac{4 \pi}{5}

0 < x < \pi

\cos x+\sin x=\frac{1}{2}

\tan x