1. Plural of arccosine; the inverse trigonometric functions that return the angle whose cosine is a given number.
Usage: mathematics; trigonometry

Examples

• The arccosines of values between -1 and 1 produce angles measured in radians.
• In calculus, we often compute the derivatives of arccosines.
• The arccosines function is denoted as arccos(x) or cos⁻¹(x).
• Students learned to evaluate arccosines using a scientific calculator.
• The range of arccosines is typically from 0 to π radians.