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If cotA+tanB whole by cotB + tanA then prove that it is =cotA × tanB |
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Answer» Step-by-step EXPLANATION: (cosA/sinA+sinB/cosB)÷(cosB/sinB +sinA/cosA) ={(cosA.cosB+sinA.sinB)×sinB.cosA}÷{(cosA.cosB+sinA.sinB)×sinA.cosB} =sinB/cosB×cosA/sinA =cotA×tanB |
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