dy Os:A- Find for the following functions: - dx 1- 1+secy xy2 = 1+ x* t2 2- If y = and t = V2x + 1 t2+1 B- If cos-1 (cos 25n = y , Find value of y?

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.