Exams › SSC CGL (Prelims) › General

If sin A = x, express tan A in terms of x.

1. x / sqrt(1 - x^2)
2. sqrt(1 - x^2) / x
3. 1 / x
4. x^2

Correct answer: x / sqrt(1 - x^2)

Solution

Since sin A = x, cos A = sqrt(1 - x^2). Then tan A = sin A / cos A = x / sqrt(1 - x^2).

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