5 Which one of the following would be a principal angle in the solution set for cos X ==. 6 Select one alternative: 5TT 9 8TT 5 O O O O 12π 5 8T 9 2 0 ≤ x ≤ 4π?

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A: Part 1: The circle below is centered at theorigin and has a radius of length 1 so that the…

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A:

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A: Here we use definition of angle of elevation.

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A: We have to write out the answer.

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A: 4. Ration of sine function and cosine function is known as tangent So option C is correct

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A: We have to find solutions