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JEEMAIN and NEET
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Mathematics
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Trigonometry
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Q)
The number of real solutions of $\tan^{-1}\sqrt{x(x+1)}+\sin^{-1}\sqrt{x^2+x+1}=\large\frac{\pi}{2}$ is
$(a)\;0\qquad(b)\;1\qquad(c)\;2\qquad(d)\;infinite$
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