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Answer to Question #5181 in Trigonometry for Daryl

Question #5181
Add & Simplify
1/1+cos(x)+1/1-cos(x)
Expert's answer
1/1+cos(x)+1/1-cos(x)=(1+cos(x)+1-cos(x))/(1-(cos(x))^2)=2/(sin(x))^2=2(1+(cotan(x)^2))

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