Question

Find the angle between the given vectors to the nearest tenth of a degree.

u = <6, -1>, v = <7, -4>

a. 20.3
b. 10.2
c. 0.2
d. 30.3

Answer 1

I know that I use \[\cos \theta = \frac{ u \times v }{ \left| \left| u \right| \right| \left| \left| v \right| \right| }\]
and right now I have \[\frac{ 42, 4 }{ \sqrt{37} \sqrt{65} }\]

Answer 2

@mathmale

Answer 3

@inkyvoyd @johnweldon1993