2 vectors at a Right angle to each other are pulling on a bolt. vector 1 = 650; vector 2 = 300 then R = ?

The magnitude of the resultant R is

R^2 = 650^2 + 300^2
R = appr 715.89

if Ø is the angle it makes with the longer vector,
then tanØ = 300/650 = ...
Ø = appr 24.8°