x=xy= - √2r=√(x^2+2)cosα=(√3/6)xcosα=x/√(x^2+2)(√3/6)x=x/√(x^2+2)√3/6=1/√(x^2+2)1/12=1/(x^2+2)x^2=10x=±√10r=2√3sinα=y/r= -√2/(2√3)= - √6/6cosα=±√30/6tanα=±√5/5