Angle Sum and Difference, Double Angle and Half Angle Formulas

Angle Sum and Difference, Double Angle and Half Angle Formulas Hipparchus, considered to be the most eminent of Greek astronomers (born 160 B.C.), derived the formulas for The following formulas (or formulae, in Latin) are trigonometric identities. Sum and Difference Formulas: Double Angle Formulas: Half Angle Formulas Example 1: Solution: The given information produces the … Read more