Sin square 30 + 2 cos2 45 + 3tan2 60
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Answer:11
SIN 30=1/2
COS 45=1/√2
TAN 60=√3
=SIN²30+2 COS² 45+3 TAN² 60
=(1/2)²+2(1/√2)²+3(√3)²
=1/4+1+9
=1/4+10
=44/4
=11
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