Simplify 1 + cot y sin y + cos y Please put the variable in parentheses when entering your answer, for example, tan(a). Type the word theta for when needed. to a single trigonometric function using sin y and cos y.

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A: Since you have posted multiple sub-parts. We will solve the first three for you. Kindly repost the…

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A: cos(360° - A) = cos(A) csc(π - A) = csc(A).

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A: We know that  cos(A+B) = cosA cosB - sinA sinB  Here, A = 123° B = 84°

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A: We are authorized to answer one question at a time, so we are answering the first one, please repost…