prove that cosA/1+tanA-sinA/1+cotA=cosA-sinA
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Step-by-step explanation:
cosA/1+(sinA/cosA)-sinA/1+(cosA/sinA)
=cos²A/cosA+sinA-sin²A/sinA+cosA
=cos²A-sin²A/sinA+cosA
=(cosA-sinA)(cosA+sinA)/sinA+cosA
=cosA-sinA
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