What is expand cos(at)cos((a+b)t+c) ?

The solution to expand cos(at)cos((a+b)t+c) is cos(at)cos(at+tb+c)

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expand cos(at)cos((a+b)t+c)

expand

cos (a t) cos ((a + b) t + c)

cos (a t) cos (a t + t b + c)

Solution steps

cos (a t) cos ((a + b) t + c)

Expand

(a + b) t + c : a t + t b + c

= cos (a t) cos (a t + t b + c)

\frac{d ^{5}}{d} x^{5} (y = 8 x^{4} - 16 x^{3} - 24 x^{2} + 32 x + 8)

\frac{( 1 - cos ( 2 x - 2 ) )}{( x - 1 ) ^{2}}

x^{2} (x + 1) d x + y^{2} (x - 1)

0.275 x + 0.725 (450 - x = 295)

\frac{A ( 2 - x ^{2} - y ^{2} )}{2}

What is expand cos(at)cos((a+b)t+c) ?
The solution to expand cos(at)cos((a+b)t+c) is cos(at)cos(at+tb+c)