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JEE Main Mathematics question

MathematicsTrigonometric Ratio and IdentitiesJEE Main

If an angle is divided into two parts such that the tangent of one part is times the tangent of the other and is their difference, then is equal to

Answer: (A)

Solution

Let the parts be and , so , and . Apply componendo–dividendo to : $Missing argument for \frac\frac{ A B+ A

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Question ID VK-008095