Cos(7p/12)

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Solution for Cos(7p/12) equation: 


p in (-oo:+oo)

cos((7*p)/12) = 0

cos((7*p)/12) = 0  <=>  (7*p)/12 = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

(7*p)/12-t_1 = 0

7/12*p-t_1 = 0 // + t_1

7/12*p = t_1 // : 7/12

p = t_1/7/12

p = 12/7*t_1

p = 12/7*pi*k_1+pi/2 i k_1 należy do I

p = 12/7*pi*k_1+pi/2

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