Trigonometry - Measuring Heights And Distances | Class 10 | Learn With BYJU'S

SOLVED:In the text we proved only the Addition and Subtraction Formulas for Cosine. Use these formulas and the cofunction identities sinx=cos((π)/(2)-x) cosx=sin((π)/(2)-x) to prove the Addition Formula for Sine. sin(s t) =cos((π)/(2)-(s t)) =cos(((π)/(2)-s)-t) and use the Subtraction Formula for Cosine.]

Cofunction Formulas (in Quadrant I) \begin{array}{ll}\sin \thet... | Filo

Common Math Formulas | Overview, Uses & Importance