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  • sin(-x)...
Multiple choice general knowledge

sin(-x)

  1. cosx

  2. -sinx

  3. 90-cosx

  4. 180-sinx

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sine is an odd function, meaning sin(-x) = -sin(x). The graph of sine is symmetric about the origin, so the negative angle produces the negative of the original value. This is a fundamental trigonometric identity.

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