Multiple choice general knowledge science & technology

The period of 2 sin x cos x is

  1. 2 pi

  2. 4 pi

  3. pi

  4. pi/2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Use the double-angle identity: 2 sin x cos x = sin(2x). The period of sin(kx) is 2π/k, so the period of sin(2x) is 2π/2 = π.

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