JEE Main 2016 Mathematics question

MathematicsTrigonometric EquationsJEE Main 2016

Not in JEE Main syllabus

The number of for which is:

Answer: (4)

Solution

Write , so , and let

A = , B = = .

Then , and the condition is . Multiplying by gives , and solving the pair for leads, after squaring, to

- 10

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Question ID VK-115561