C b=9 m A250 c= 12 m

Q: 8. 2

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Q: When do we use the half-angle and double angle formulas? Can you provide an example?

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A:

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A: Step 1: Step 2: Step 3: Step 4:

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Q: Define the law of Cosines?

A: Law of Cosines relates the lengths of sides of a triangle to the Cosine of one of its angles.

Q: Find a complex number so that c^2=i

A: