Question

HELPPP
What is the angle between v= (-7,8) and w =(5,3)

Use the cosine of the angle to find the actual angle between the two vectors.

Answer 1

Do you know about dot product?

Answer 2

we can assume those are vectors right?

Answer 3

there it is, at the end ... vectors

oyvey, my reading is awful this week

Answer 4

the formula might be ... and this is iffy these days \[cos(t)=\frac{a.b}{|a||b|}\]

Answer 5

Yes

Answer 6

sin(t) is the cross on top right?

Answer 7

Umm. a • b = a1b1 + a2b2

Answer 8

Another way, the angle you want is
arctan(-7/8) - arctan(3/5)

Answer 9

personally, i just use a protractor :)

Answer 10

close enough for multiple choice