1) R^2 = P1^2 + P2^2 = 3.4^2 + 5.3^2 = 11.56 + 28.09 = 39.56
R = 6.29
2) R1^2 = N1^2 + N2^2 = 6.45^2 + 2.38^2 = 41.6 + 5.66 = 47.26
R1 = 6.87
3) sinf1 = P2/R = 5.3/6.29 = 0.84
f1 = asin(0.84) = 57.14
4) sinf2 = P1/R = 3.4/6.29 = 0.54
f2 = asin(0.54) = 32.66