Looking at an introduction to vectors.

In my textbook it gives the example question:

"A particle of mass 0.1

**kg**is held at rest on a rough plane inclined at 20Â° to the horizontal by a friction force, F, acting up the plane. Find the magnitude of F and the normal reaction."

The given answer is:

"F = 0.1

**g**sin20Â° = 0.335 N"

Is this a typo, or is there something that I'm missing?

Thanks very much as ever

Theo

ps can anyone explain what's happening with the units here? How do you get from grams * degrees to Newtons?