Prove Tan^2A/(tan^2A-1) + cosec^2A/(sec^2A-cosec2A)=1/(sin^2A-cos^2A)

[Dhanalakshmi]

Prove
Tan²A/(tan²A-1) + cosec²A/(sec²A-cosec²A)=1/(sin²A-cos²A)

[Dhanalakshmi]