калай шығаруға болады???

Question

Sin²x=Cos+1


Ж:П/2+Пn,П+2Пn,nэz

Answer 1

Sin²x=Cosx+1
Cosx+1=Sin²x
Cosx+Cos²x+Sin²x=Sin²x
Cosx+Cos²x=Sin²x-Sin²x
Cosx(Cosx+1)=0
Cosx=0
x=pi/2+pi, n∈z
Cosx=-1
x=pi+2pin, n∈z