Solved: What happens if you take B = 2? in the addition

Chapter 1, Problem 38E

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QUESTION: Problem 38EWhat happens if you take B = 2π in the addition formulas? Do the results agree with something you already know?

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QUESTION: Problem 38EWhat happens if you take B = 2π in the addition formulas? Do the results agree with something you already know?

ANSWER:

Problem 38E

Solution

Step 1 of 2 Our aim is to test the condition  in the given trigonometric Addition formulas

Sin(A + B) = sin A cos B + cos A sin B

cos(A + B) = cos A cos B - sin A sin B

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