Question 955475
Right Triangle, and the ratio between the sides is important if you are interested in just finding the angles.


{{{4^2+1^2=h^2}}}
{{{h=sqrt(17)}}}


More than one way to go.
Law of Sines?


{{{sin(90)/h=sin(alpha)/4=sin(beta)/1}}}


{{{sin(90)/sqrt(17)=sin(alpha)/4=sin(beta)/1}}}