Multiple choice general knowledge

sin(180-x)=

  1. cosx

  2. sinx

  3. -cosx

  4. -sinx

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

sin(180° - x) = sin x due to the supplementary angle identity. In the second quadrant (angles 90° to 180°), sine is positive and has the same value as its supplement. This is related to the symmetry of the sine function.