8 Find cos (s-t) given that cos%= with s in quadrant II, and sin t= 13' with t in quadrant II. 17' 171 O A. 221 21 OB. 221 171 C. 221 21 O D. 221

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A: Given,         coss=13, with s in quadrant I, and sint=-12, with t in quadrant IV.

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A: since you have asked multiple questions in a single request so we will be answering only first…

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A: Taking We approximate

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A: Note:- according to the company policy we can attempt only one question so please upload the next…

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A: Please see the answer in step 2

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Q: 3 s and tin quadrant II. 23. Find cos (s+t) given that cos s =- and sint = 4+6/6 25 4 6/6 25 O 4+6v6…

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