cos*t 1-sint Working on the right side of the equation, the first step to solve this problem is to use: a) Sum and Difference Identities b) Double Angle Identities c) Half Angle Identities d) Pythagorean ldentities The second step to solve problem (3) is to use: a) Factorization b) Expansion c) Double Angle Identities d) Pythagorean Identities Prove =1+ sint

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