Can someone please help me?
Write the expression as the sine, cosine, or tangent of an angle.

cos 112° cos 45° + sin 112° sin 45°

Question

Can someone please help me? 
Write the expression as the sine, cosine, or tangent of an angle.

cos 112° cos 45° + sin 112° sin 45°

anonymous · Answer

This is slightly similar to your last question, but different enough since it's a different identity this time.

cos(a)cos(b) + sin(a)sin(b) = cos(a - b)

Notice that there is "+" on the left side but a "-" on the right.  Here, "a" is 112 and "b" is 45.

anonymous · Answer

cos 67 degrees?

anonymous · Answer

first find the values of given degrees

anonymous · Answer

take multiple angle formulas in use

anonymous · Answer

Yes!  Good work!  cos 67 is the answer!

anonymous · Answer

@Darion  well done...