If tanA + cotA = 2, then what is the value of tansquareA + cotsquareA.
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tanA+cotA=2
=> (tanA+cotA)^2=4
=> tan^2A+cot^2A+2tanA.cotA=4
=> tan^2A+cot^2A+2.tan A.1/tan A=4
=> tan^2A+cot^2A+2=4
=> tan^2A+cot^2A=4-2=2
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