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Tan A+cot A=sec Acosec A?

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Solution :We have,

\ LHS=tanA+cotA=sinA/cosA +cosA/sinA\ \Rightarrow sin^2A+cos^2A/sinA	imes cosA=(1/sinA)	imes (1/cosA)\ \Rightarrow secA	imes coescA

Hence , \LHS=RHS proved

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Deependra Verma

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