What is cos(x)cos(y)+sin(x)sin(y) ?

The solution to cos(x)cos(y)+sin(x)sin(y) is cos(x-y)

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simplify cos(x)cos(y)+sin(x)sin(y)

simplify

cos (x) cos (y) + sin (x) sin (y)

cos (x - y)

Solution steps

cos (x) cos (y) + sin (x) sin (y)

Use the Angle Difference identity:

cos (s) cos (t) + sin (s) sin (t) = cos (s - t)

= cos (x - y)

\frac{6 x ^{4} - 12 x ^{3} + 6 x ^{2}}{3 x ^{2}}

- \frac{1}{4} + \frac{3}{2}

p (x - 3 y) + (x - 2 p) (x - 3 y)

9^{2} - x

(2 - 1) (2 + 1)

What is cos(x)cos(y)+sin(x)sin(y) ?
The solution to cos(x)cos(y)+sin(x)sin(y) is cos(x-y)