Multiple choice general knowledge

cos 0=

  1. 0

  2. -1

  3. 1

  4. -1/2

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

cos 0° = 1 because at angle 0 on the unit circle, the point is (1, 0), and cosine represents the x-coordinate. This is a fundamental value in trigonometry. Options 0, -1, and -1/2 are incorrect.