Question

Helpp

Answer 1

arc length = radius * theta, solve for theta

Answer 2

1.78

Answer 3

good

Answer 4

i did

Answer 5

D

Answer 6

good

Answer 7

B and C

Answer 8

B doesn't work (tan = sin/cos so if sin is positive and cos is negative tan must also be negative)

Answer 9

as a hint, sec = 1/cos

Answer 10

a

Answer 11

if cos(theta) is root(5)/3 then sec(theta) = ?

Answer 12

D

Answer 13

good

Answer 14

so c and d

Answer 15

yes

Answer 16

False

Answer 17

hints: sin and cos have ranges from -1 to 1

Answer 18

so true duh

Answer 19

yup good

Answer 20

A

Answer 21

good

Answer 22

27

Answer 23

good

Answer 24

A

Answer 25

awesome

Answer 26

B

Answer 27

check your calculations again

let's use angle 65 since it's already given

we have the hypotenuse, and we want to find the angle opposite to the angle 65

what ratio should we use and what's the value of b?

Answer 28

Sine

Answer 29

good, and how would you set up the calculation?

Answer 30

A

Answer 31

awesome

Answer 32

like it would be 65/25?

Answer 33

sin(theta) = opposite/hypotenuse

then plug in theta, opposite, hypotenuse, that's how you'd set up the calculation

Answer 34

same rule as before (arc length = radius * theta)

*** this is important - you must convert degrees to radians for this formula to work

Answer 35

21.8

Answer 36

almost, they want 2 decimal places, so 21.82

Answer 37

well an easy first step is just to convert to degrees, what would that be?

Answer 38

A and D

Answer 39

yeah that's good

Answer 40

True

Answer 41

yup

Answer 42

180

Answer 43

if your theta value is 295 which quadrant does it fall into and what would its ref. angle be?

Answer 44

Quadrant I

Answer 45

quadrant I

Answer 46

quadrant I

Answer 47

right

Answer 48

@Vocaloid

Answer 49

Take another look at the chart

Is 295 between 0 and 90?

Answer 50

65

Answer 51

good, 65 is it