Question 767937
Evaluate
3tan^2 60degrees + 2sin^2 30degrees - cos^2 45 degrees 
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tan 60º=√3
tan^2 60º=3
3tan^2 60=9
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sin 30º=1/2
sin^2 30º=1/4
2sin^2 30º=1/2
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cos 45º=√2/2
cos^2 45º=2/4=1/2
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3tan^2 60degrees + 2sin^2 30degrees - cos^2 45 degrees=9+1/2-1/2=9