Question

Show that (1 - tan² A) / (cot² A - 1) = tan² A

Answer 1

Hi ,

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We know that ,

cotA = 1/tanA

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LHS = ( 1 - tan²A )/( cot²A - 1 )

= ( 1 - tan²A )/[ 1/tan²A - 1 )]

= ( 1 - tan²A )/ [ ( 1 - tan²A )/tan²A ]

After cancellation ,

= tan²A

= RHS

I hope this helps you.

: )

Answer 2

See guy's u r answer