Math, asked by saljaroucha, 11 months ago

Help me solve this pleaaase!

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Answered by sandy1816

0

Step-by-step explanation:

cosx-sinx/cosx+sinx

rationalize the denominator

(cosx-sinx)(cosx-sinx)/(cosx+sinx)(cosx-sinx)

=(cosx-sinx)²/cos²x-sin²x

=cos²x-2sinxcosx+sin²x/cos²x-sin²x

=1-2sinxcosx/cos²x-sin²x

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