thats geometry or trig...nuthun tu du with Kemistree
R=2.50=distans
angel=-35.1.....me assume thats degree
x=R*kosine(-35.1 deg)=R*kosine(+35.1deg)=2.50*0.818149717
x=2.5*0.8181....=2.045374294
y=R sine(-35.1 deg)=R* (-sine(35.1 deg))=2.5*(-0.575005252)
=-1.43751313