Question: 1+ sings = Itsint 24. Derive the double angle formulas for both sine and cosine by beginning with the angle sum formulas. 25. Derive the

1+ sings = Itsint 24. Derive the double angle formulas for both sine and cosine by beginning with the angle sum formulas. 25. Derive the other two Pythagorean identities by manipulating the identity sin20 + cos20 = 1

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