If sinA=cosA, then show that the value of 2tanA+cos^2A.
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clearly A= 45 degrees so substitute 45 degrees in given expression
2*tan(45)+ cos^2(45)=2*1+1/2=2+1/2=5/2
2*tan(45)+ cos^2(45)=2*1+1/2=2+1/2=5/2
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