Q38 of 123 Page 9

Mark the Correct alternative in the following:

The value of cos2 48o – sin2 12o is


Given


cos2 48o – sin2 12o


[by using the formula cos 2x = 2cos2 x – 1 and cos2x = 1 – 2sin2x]






[by using the formula ]







Therefore


Hence the answer is option A.

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