Which of the following is an even function? sinx, tanx, cosx, None of these
- sinx
- tanx
- cosx
- None of these
Explanation
An even function satisfies the rule f(-x) = f(x).cos(-x) = cos(x), so cos x is an even function.
Last verified on 03-07-2026
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- sinx
- tanx
- cosx
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- (x + 2)(x + 1)
- (x - 2)(x + 1)
- (x + 2)(x - 1)
- None of these