Exams › SSC CGL (Prelims) › General

If $\tan x=1$, find the value of $\sin^2 x+\cos^2 x$.

1. 0
2. 1/2
3. 1
4. 2

Correct answer: 1

Solution

The expression $\sin^2 x+\cos^2 x$ is a standard trigonometric identity and is always equal to 1 for any angle $x$. So the given condition $\tan x=1$ is not needed.

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