(tanA/1-cotA)+(cotA/1-tanA)=1+secAcosecA
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tanA/(1-cotA) +cotA/(1-tanA)
=>tan^2A/(tanA-1)+cotA/(1-tanA)
=>(tan^2A-cotA)/(tanA-1)
=>(tan^3A-1)/tanA.(tanA-1)
=>(tan^2A+tana+1)/tanA
=>tanA+cotA+1
=>sinA/cosA+cosA/sinA +1
=>(sin^2A+cos^2A)/sinA.cosA+1
=>1/sinA.cosA+1
=>secA.cosecA +1=RHS
=>tan^2A/(tanA-1)+cotA/(1-tanA)
=>(tan^2A-cotA)/(tanA-1)
=>(tan^3A-1)/tanA.(tanA-1)
=>(tan^2A+tana+1)/tanA
=>tanA+cotA+1
=>sinA/cosA+cosA/sinA +1
=>(sin^2A+cos^2A)/sinA.cosA+1
=>1/sinA.cosA+1
=>secA.cosecA +1=RHS
abhi178:
i hope you understand
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