Question

Prove that:

(1-tanA)²÷(1-cotA)² =( 1+tan²A)÷(1+cot²A)

Answer 1

Answer:

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Answer 2

• LHS: (1-tan²A)/(1-cot²A)
• =(1 -tan²A)/(1-1/tan²A)
• =(1-tan²A)/[(1-tan²A)/ tan²A]
• =tan²A.
• RHS: (1+tanA)²/(1+cotA)²