Question

i will medal and fan

Answer 1

which quadrant has cosine and sine negative?

Answer 2

dont know I'm supposed to be taking algebra2 not trig but yet its giving me trig stuff

Answer 3

so you haven't learned about quadrants yet?

Answer 4

nope

Answer 5

how about the xy coordinate grid?

Answer 6

like a graph

Answer 7

yes like this

http://www.helpingwithmath.com/printables/worksheets/geometry/grid-10_10.gif

Answer 8

ok I've seen one of those before

Answer 9

it turns out that the 4 parts of the grid can be split up into 4 quadrants

those quadrants are Q1, Q2, Q3, Q4
Q1 for quadrant 1
Q2 for quadrant 2
etc etc

Answer 10

which quadrant has (x,y) points where x and y are both negative?

Answer 11

q3

Answer 12

good

Answer 13

let's draw a right triangle in Q3

Answer 14

we're given

cos(theta) = -5/13

do you recall that cosine = adjacent/hypotenuse?

Answer 15

hypotenuse

Answer 16

does `cosine = adjacent/hypotenuse` look familiar?