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)) (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)

x (x^{3} e^{7 x} + 2)

(6 n + 4) (1 + lo g_{10} (n))

sinh (7 t) + (2 t + 1) U (t - 1)

\frac{x ^{4} + 1}{x ( x ^{2} + 1 ) ^{2}}

(x + \frac{5}{x})^{9}

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)