Originally Posted by

**Paymemoney** Hi

can someone tell me if they find anything wrong with my solution for the following question: Mr F says: Yes. It's sloppy. See below.

1) Find the angle between the straight lines L and M, where L has symmetric equations

$\displaystyle \frac{x-1}{4}=\frac{y+3}{4}=\frac{z-2}{3}$

And M parametric equations

$\displaystyle x=3+2t$

$\displaystyle y=5-4t$

$\displaystyle z=-7+2t$

$\displaystyle cos\theta = \frac{8-16+6}{\sqrt{41}\sqrt{24}} = \frac{-2}{\sqrt{41}\sqrt{24}} = 93.66$

P.S