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Question

If 1+sinA1sinA=secA+tanA then A lies in which of the following quadrants?

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Solution

The term on the RHS is defined only for 1sinA0A(4n+1)π2, for n being and integer.
Also, the domain of tanA is π2<A<π2 and that of secA is 0Aπ, Aπ2.
Now, for the given question, option (B) is going to be correct.
As the quadrant of the ramaining options contains π2.

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