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Posted by on Sunday, February 24, 2013 at 6:37am.

Prove the identity:

tanA/secA+1 = secA-1/tanA

Can u please explainit to me step by step?

I greatly appreciate your help! Thanks:)

  • Math - , Sunday, February 24, 2013 at 6:51am

    This is exactly like the one with (1-sin)/cos

    The identity tan^2 = sec^1 - 1 should help.

  • Math - , Sunday, February 24, 2013 at 7:04am

    we never learned this identity
    at school...is there any basio other identity thtwould help bcz im sure that since we neverlearned this identity in class he wont mark it right on a test..

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