SOLUTION: Prove this identity {{{ (sin2x + cos2x -1) / (sin2x + cos2x +1) }}} = {{{ (1

SOLUTION: Prove this identity {{{ (sin2x + cos2x -1) / (sin2x + cos2x +1) }}} = {{{ (1 - tanx )/ (1+cotx) }}}

Question 217331: Prove this identity
=
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
Prove this identity

=

Step 1. , , , and

Step 2. Let's work the numerator:

Factor

Step 3. Let's work with the denominator:

Factor

Step 4. Now combine the equations Step 3 and 4

=

But

=

=

Step 5 ANSWER: =

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