Mark the Correct alternative in the following:
The value of cos² 48^o – sin² 12^o is

Question

Mark the Correct alternative in the following: The value of cos 2 48 o – sin 2 12 o is

Philoid · Accepted Answer

_Given

cos² 48^o – sin² 12^o

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

[by using the formula ]

Therefore

Hence the answer is option A.

Mark the Correct alternative in the following:The value of cos2 48o – sin2 12o is