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

The solution to expand (sin(x)+cos(x))*(sin(y)+cos(y)) is sin(x+y)+sin(x)sin(y)+cos(x)cos(y)

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expand (sin(x)+cos(x))*(sin(y)+cos(y))

expand

(sin (x) + cos (x)) \cdot (sin (y) + cos (y))

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

Solution steps

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

Apply FOIL method

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

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

- \frac{1}{4} (t + 3 ln ∣ t ∣) + C

\frac{x + 1 + x ^{2}}{x ^{2} ( x ^{2} + 2 x + 5 )}

(x - 1 + 7) (x - 1 - 7)

(z + \frac{3}{5}) (z - \frac{3}{5})

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