SOLUTION: prove the identity of the trigonometric equation: cot^2(x)+sec^2(x)=tan^2(x)+csc... Must do only one side. Thanks!
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-> SOLUTION: prove the identity of the trigonometric equation: cot^2(x)+sec^2(x)=tan^2(x)+csc... Must do only one side. Thanks!
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prove the identity of the trigonometric equation: cot^2(x)+sec^2(x)=tan^2(x)+csc... Must do only one side. Thanks!