The value of sin 2 60 o - cos 2 60 o is: (a) 1/2 (b) -1/2 (c) 2 (d) -2
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sin^2 60 -cos^2 60
=3/4- 1/4
=2/4
=1/2
a) is correct
=3/4- 1/4
=2/4
=1/2
a) is correct
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