id=108858 Instructions Please post your answers directly on the screen or inbox me directly. 时☆ 0 1. Explain how to determine the reduction identities from the double-angle identity cos(2x) = cos2 x − sin2 x. 2. Explain how to determine the double-angle formula for tan(2x) using the double-angle formulas for cos(2x) and sin(2x). 3. If you are looking for a missing side of a triangle, what do you need to know when using the Law of Cosines? ◄ Previous Take the Quiz Next ▸

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