Poor LaTeX in Appendix C (Interpolation)

[scurest]

The math formulas in Appendix C should use normal juxtaposition for multiplication, not *. And they should use \sin, not sin, for the sine.

For example

$$v_t = \frac{\sin(a(1 - t))}{\sin(a)} v_k + s \frac{\sin(at)}{\sin(a)} v_{k+1}$$

not

$$v_t = \frac{sin(a(1 - t))}{sin(a)} * v_k + s * \frac{sin(at)}{sin(a)} * v_{k+1}$$