SOLUTION: Write the expression as the sine, cosine, or tangent of an angle. cos 94° cos 37° + sin 94° sin 37°

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Question 642540: Write the expression as the sine, cosine, or tangent of an angle.
cos 94° cos 37° + sin 94° sin 37°

Answer by Century(7) About Me  (Show Source):
You can put this solution on YOUR website!
In order to do this problem you will need to use the formula for the cosine of a difference which is
cos%28A-B%29+=+cos+A+cos+B+%2B+sin+A+sin+B
Thus cos(94°)cos(37°)+sin(94°)sin(37°)=cos(94°-37°) or
cos(94°)cos(37°)+sin(94°)sin(37°) = cos(57°)