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JEE Main Mathematics question

MathematicsTrigonometric EquationsJEE Main

Not in JEE Main syllabus

If , then the principal value of is

Answer: (D)

Solution

Write as a single fraction: . Use half angles: $Missing argument for \frac\frac{2\cos^2\frac x2}{2Missing argument for \frac\frac x2Missing argument for \frac\frac

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Question ID VK-007955