To the nearest degree, what is m

Cos (M) = $\frac{24^{2}+51^{2}-45^{2}}{2\cdot 24\cdot 51}=\frac{1152}{2448}$

M = cos$^{-1}$($\frac{1152}{2448}$) ≈ 61.9 ≈ $\boxed{62}$