56) (1 + 6088) (1 + cot?9) + 1= – InterviewSolution

1.

56) (1 + 6088) (1 + cot?9) + 1=

Answer»

(1 - cos A)(1 + cos A) ( 1 + cot^2 A) + 1= (1 - cos^2 A) (1 + cot^2 A) + 1= sin^2 A (1 + cos^2 A/sin^2 A) + 1

We knowsin^2 A + cos^2 A = 1

Then, we get= sin^2 A + cos^2 A + 1= 1 + 1= 2

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