(1+cot A-cosecA)(1+tan A+ sec A) = 2
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what we wri cotA=cosA/sinA,cosec=1/sinA
(1+cosA/sinA-1/sinA)(1+sinA/cosA+1/cosA)
(sinA+cosA-sinA/sinA(cosA+sinA+cosA/cosA)
(cosA/cosA)(2cosA+sinA/cosA)
1×2cosA/cosA+sinA/cosA
2+tanA
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