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wariber [46]
3 years ago
15

If we know the values of the sine and cosine of x and y, we can find the value of cos(x - y) by using the ____ Formula for Cosin

e. State the formula: cos(x - y) = ____.
Mathematics
1 answer:
kolbaska11 [484]3 years ago
5 0

Answer:

\cos(x - y) = \cos(x)\cos(y) + \sin(x)\sin(y)

Step-by-step explanation:

Given

\cos(x - y)

Required

State the formula

From trigonometry identity, the formula of \cos(x - y) is:

\cos(x - y) = \cos(x)\cos(y) + \sin(x)\sin(y)

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