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MathsMediumMCQ2016 · 03 Apr

Q82.Consider f(x) = tan−1(√1+sin ), point (1) ( π6 , 0) (2) ( π4 , 0) (3) (0, 0) (4) (0, 2π3 )

What This Question Tests

This question requires simplifying a trigonometric function using identities, finding its derivative, and then determining the equation of the normal line at a given point to check which of the provided points it passes through.

Concepts Tested

Trigonometric identitiesDerivative of inverse trigonometric functionsEquation of normal to a curve

Formulas Used

tan⁻¹(tan θ) = θ

√(1+sin x) = |sin(x/2)+cos(x/2)|

Equation of normal y-y₁ = (-1/m_t)(x-x₁)

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