Inverse trigonometric functions
Trigonometric equations and inverse functions · Mathematics
Study notes
Q: Evaluate: (a) arcsin(1/2) (b) arccos(-1/2) (c) arctan(1). (a) Angle with sin = 1/2 in [-π/2, π/2]: π/6. (b) Angle with cos = -1/2 in [0,π]: 2π/3. (c) Angle with tan = 1 in (-π/2,π/2): π/4.