cos(6x-pi/4)=0

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Solution for cos(6x-pi/4)=0 equation: 


x in (-oo:+oo)

cos(6*x-(pi/4)) = 0

cos(6*x-(pi/4)) = 0  <=>  6*x-(pi/4) = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

6*x-t_1-(pi/4) = 0

6*x-t_1-(pi/4) = 0 // + -t_1-(pi/4)

6*x = -(-t_1-(pi/4)) // : 6

x = (-(-t_1-(pi/4)))/6

x = (t_1+pi/4)/6

x = (pi*k_1+pi/2+pi/4)/6 i k_1 należy do I

x = (pi*k_1+pi/2+pi/4)/6

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