Question

Help me friends...........................

Answer 1

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Answer 2

$3tg \frac{ \pi }{4}-Sin ^{2} \frac{ \pi }{3}+Cos ^{2}(- \frac{ \pi }{6})=3*1-( \frac{ \sqrt{3} }{2}) ^{2}+( \frac{ \sqrt{3} }{2}) ^{2} =3- \frac{3}{4} + \frac{3}{4} =3$