Question

Help

Answer 1

A

Answer 2

you can subtract multiples of 2pi from 20pi/3 until you get an angle that is within the unit circle

Answer 3

C

Answer 4

good, C not A since the angle after subtracting 6 pi is 2pi/3

Answer 5

on the unit circle, x^2 + y^2 = 1

so

(-3/5)^2 + y^2 = 1 solve for y, you'll get two y values and you have to pick the one that would put it in the quadrant II

Answer 6

if it wasn't clear before, you just need to solve

(-3/5)^2 + y^2 = 1

for y ^^

Answer 7

4/5

Answer 8

awesome, since it's qII we choose the positive y-value 4/5

Answer 9

True

Answer 10

keep in mind the range of sin is only from -1 to 1

Answer 11

oh okay so false

Answer 12

because it is out of the range of -1 amd 1

Answer 13

yes

Answer 14

A

Answer 15

that's not quite right, sin would be negative since that's below the x-axis

Answer 16

B

Answer 17

awesome

Answer 18

as a hint try drawing where cos(t) and cos(w) would be on the unit circle, given that they're both in quadrant I

then you'll see which angle is bigger

Answer 19

A

Answer 20

good

Answer 21

first, what would cos(theta) be based on that info?

Answer 22

um ?/5?

Answer 23

try sketching a right triangle in quadrant II with sin(theta) = 4/5

Answer 24

4/3 for tan

Answer 25

nope, not 4/3, it can't be positive

Answer 26

this is really important to know/be able to do, this is how you would sketch a triangle in QII, now add the values for sin(theta) = 4/5 then calculate cos(theta)

Answer 27

and i know
adj=x=3
opp=y=4
hyp=r=5

Answer 28

okay

Answer 29

check the sign of x again

Answer 30

we're on the left side of the y-axis so x must be negative

then calculate cos(theta), then calculate cot(theta) given sin and cos

Answer 31

cot=cos/sin
cot=(-3/5)/(4/5)=-3/4

Answer 32

I'm sorry im jumping ahead of myself but i know how to do this. just was trying to refresh my memory

Answer 33

awesome, -3/4 is it

Answer 34

A and C

Answer 35

you're missing at least one of the options

Answer 36

B c D

Answer 37

9^2 + 12^2 = 15^2 true or false?

Answer 38

True

Answer 39

good, so what would your final answer be?

Answer 40

All of em

Answer 41

good

Answer 42

C

Answer 43

good