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slavikrds [6]
3 years ago
8

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

Mathematics
2 answers:
-Dominant- [34]3 years ago
8 0
Cos(A - B) = cos(A)cos(B) - sin(A)sin(B)
Thus,
cos(8x)cos(2x) - sin(8x)sin(2x)
= cos(8x - 2x)
= cos(6x)
Bad White [126]3 years ago
6 0
Cos 8x cos 2x - sin 8x sin 2x = 1/2 sqrt(2+sqrt(3)
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