If (1+tanA+secA)(1+cotA-cosecA)=?
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Answer:
=>(1+tanA+secA)(1+cotA-cosecA)
=>1+cotA-cosecA+tanA+tanAcotA-tanAcosecA+secA+secAcotA-secAcosecA
=>1+cotA+tanA+1-secAcosecA
=>(2+sinA/cosA+cosA/sinA)-(1/cosA×1/sinA)
=>(2sinAcosA+cos²A+sin²A/cosAsinA)-(1/cosAsinA)
=>2sinAcosA+1-1/cosAsinA
=>2sinAcosA/cosAsinA
=>Ans=2
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