(1+tan A+ sec A)(1+cotA-cosecA)
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Step-by-step explanation:
(1+tanA+secA) ( 1+cotA-cosecA)
= 1+cotA-cosecA+tanA+1-secA+secA+cosecA -secAcosecA
= 2+tanA + cotA- secAcosecA
=( tanA+cotX) -2cosec2A+2
= (sin²A+cos²A) / sinAcosA -2 cosec2A+2
= 2/2siinAcosA- 2cosec2A+2
= 2cosec2A-2cosec2A+2
= 2
hope this helps you
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