Trigonometry

Inverse Trig Functions

arcsin, arccos, arctan

  • High school
  • about 3 min
  • 6 of 11 in the family
Not started
arcsin[-π/2, π/2]arccos[0, π]
v = 0.50
arcsin⁡(0.50)=0.5236 rad=30.0°\arcsin(0.50)=0.5236\text{ rad}=30.0°
arccos⁡(0.50)=1.0472 rad=60.0°\arccos(0.50)=1.0472\text{ rad}=60.0°

Inverse trig functions "undo" sin/cos and return the angle. arcsin has range [-π/2, π/2], arccos [0, π] – guaranteeing a single unique answer.

Where it is taught