cos(11x/12)

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Solution for cos(11x/12) equation: 


x in (-oo:+oo)

cos((11*x)/12) = 0

cos((11*x)/12) = 0  <=>  (11*x)/12 = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

(11*x)/12-t_1 = 0

11/12*x-t_1 = 0 // + t_1

11/12*x = t_1 // : 11/12

x = t_1/11/12

x = 12/11*t_1

x = 12/11*pi*k_1+pi/2 i k_1 należy do I

x = 12/11*pi*k_1+pi/2

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