cas7saPauBrason cas7saPauBrason

11-11-2016
Mathematics

contestada

Write the expression as the sine, cosine, or tangent of an angle.

cos 112Á cos 45Á + sin 112Á sin 45Á

Respuesta :

syed514 syed514

15-11-2016

The given expression is the expansion of cos (a-b)
so we can simply calculate it as cos(112-45)= cos 67

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