3. Suppose cos(0) %3D a. There are two possible angle measures 0 within the interval from 0 to 2r. Using geometry and without using a calculator, find both possible values of 0. b. For the given information, explain why tan(0) could be either positive or negative.

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A: Here I am attaching image so that you understand each and every step.

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A: Note:- Since you have asked multiple question As per our policy, we will solve the first question…