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CosA/1-TanA+sinA/1-cotA=cosA+sinA

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CosA/1-TanA+sinA/1-cotA=cosA+sinA

Posted by Ramvir Singh 5 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Arpita Singh 5 years, 4 months ago

LHS=CosA/1-tanA+sinA/1-cotA→CosA/1-sinA/cosA+sinA/1-cosA/sinA→cosA/cosA-sinA/cosA+sinA/sinA-cosA/sinA→cos^2A/cosA-sinA+sin^2A/sinA-cosA→cos^2A-sin^2A/cosA-sinA→(cosA+sinA)(cosA-sinA)/(cosA-sinA)→cosA+sinA (HENCE PROVED)

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CBSE > Class 10 > Mathematics