Prove that : tan²A/(tan²A - 1) + cosec²A/(sec²A - cosec²A) = 1/(1 - 2cos²A)

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tan²A/tan²A-1 + cosec²A/sec²A-cosec²A = 1/1-2cos²A
tan²A/tan²A-1 + cosec²A/sec²A-cosec²A = 1/1-2cos²A
tan^2a/tan^2a-1+cosec^2a/sec^2a-cosec^2a=1/1-2 cos^2a
Prove that tan^2A/tan^2A-1+cosec^2A/sec^2A-cosec^2A=1/1-2cos^2A
Prove Tan2A/(tan2A-1) + cosec2A/(sec2A-cosec2A)=1/(sin2A-cos2A)
Prove that tan^(2)A/(tan^2A-1)+cosec^(2)A/(sec^2A-cosec^2A)=(1)/(1-2cos^(2)A)
tan^ 2 a tan^ 2 a-1 + cosec^ 2 a sec^ 2 a-cosec^ 2 a =?
#math #trigonometry
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