= 1+3 cos(30) = 0 sin(8) C a. r = 5 sin b. с. 5

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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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Q: 3T 7. (a) sin (b) cos

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A: We know thatcosα+β=cosα cosβ-sinα sinβ