Evaluate 2sin^2 30° tan 60°-3cos^2 60°sec^2 …
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Gaurav Seth 4 years, 10 months ago
sin 30°=1/2=>sin^2 30°=1/4
cos 45°=1/root 2=>cos^2 45°=1/2
tan 60°=root 3=>tan ^2 60°=3
So, 2 sin ^2 30°-3cos^2 45° +tan^2 60°
=>2(1/4)-3(1/2)+3
=>1/2-3/2+3
=>(1-3+6)/2
=>4/2
=>2
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