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" 23.Evaluate: "2tan^(2)45^(@)+cos^(2)30...

" 23.Evaluate: "2tan^(2)45^(@)+cos^(2)30^(@)-sin^(2)60^(@)

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Evaluate : 2 tan ^(2) 45^(@) + cos ^(2) 30^(@) - sin ^(2) 60^(@)

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