2sin(x/4)*sin(x/4)=1

Question

2sin(x/4)*sin(x/4)=1

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Answer 1

2sin(x/4)cos(x/4)=1
sin(2*x/4)=1 (формула двойного угла)
sin(x/2)=1
x/2=pi/2 + 2piN
x=pi+4piN

Comments

спасибо)