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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Guyana #340795 on Jan 2024