Principal value branches
Trigonometric equations and inverse functions · Mathematics
Study notes
Q: Find principal values: (a) arcsin(-√3/2) (b) arccos(0) (c) arctan(-√3). (a) In [-π/2,π/2], sin = -√3/2: -π/3. (b) In [0,π], cos = 0: π/2. (c) In (-π/2,π/2), tan = -√3: -π/3.