Question

questions in attachment

Answer 1

@melodycrazysouthern

Answer 2

wait i think ik some one who can help

Answer 3

ok. Are you sure about your answers?

Answer 4

lol im not good at math lol but ss and science im good at lol @thomaster (Moderator)

Answer 5

Can you let him know?

Answer 6

yas lol

Answer 7

thanks

Answer 8

welcome lol

Answer 9

@Hero

Answer 10

well if u need me pm me lol byeee

Answer 11

ok.

Answer 12

@TheSmartOne Math help?

Answer 13

ok, let me give an example for #12

Answer 14

\(\sf\Large y = \sqrt{x+4}\)

The domain would be \(\sf x \ge -4\)

because if x is smaller than -4, then the equation would be negative and that cannot happen.

Answer 15

help with others?

Answer 16

@jim_thompson5910
12 is done.
13,16 and 1 I need help with also.

Answer 17

@jim_thompson5910

Answer 18

ok one moment

Answer 19

Did you want to start with #13 ?

Answer 20

yeah

Answer 21

using angle B as the reference angle, what is the opposite side?

Answer 22

C

Answer 23

C is an angle

sides are things like AB, BC, etc
you need 2 points to define a side

Answer 24

CA

Answer 25

good

Answer 26

what is the adjacent side?

Answer 27

BA? or BC

Answer 28

BA is the longest side, it is the hypotenuse

Answer 29

BC is the adjacent side

Answer 30

ok.

Answer 31

to compute the tangent of angle B, you divide CA/BC

CA/BC = 40/9

Answer 32

since tangent = opposite/adjacent

Answer 33

4.4

Answer 34

oh. never mind.

Answer 35

you'd leave it as 40/9

Answer 36

ok. got that. 16?

Answer 37

with respect to the 44 degree angle, what are the sides x and 6?

Answer 38

it a 90 degree triangle. I forget what the whole area is but both small sides are 6?

Answer 39

8.3?

Answer 40

with respect to angle 44 degrees

what is the 6 side? is that the hypotenuse? opposite? adjacent?

Answer 41

oh. I know.adjacent

Answer 42

yes

Answer 43

how about the side x?

Answer 44

hypotenuse

Answer 45

what trig function ties the adjacent and hypotenuse?

Answer 46

coSine Function:

Answer 47

yep cosine

Answer 48

so we can say

cos(44) = 6/x

Answer 49

use a calculator to evaluate the value of `cos(44)`

make sure you are in degree mode

tell me what the value of `cos(44)` is

Answer 50

0.99984330864

Answer 51

you need to be in degree mode

Answer 52

0.71933980033

Answer 53

am i right?

Answer 54

yes, so
cos(44) = 6/x
turns into
0.71933980033 = 6/x

Answer 55

now isolate x

Answer 56

Is it 6?

Answer 57

plug it into 0.71933980033 = 6/x to check

Answer 58

0.71933980033 = 6/x

0.71933980033 = 6/6 .... replace x with 6

0.71933980033 = 1 ... false

Answer 59

will 8.3 work?

Answer 60

show me your steps as to how you isolated x

Answer 61

how do I do it again?

Answer 62

step 1) multiply both sides by x
step 2) divide both sides by 0.71933980033

Answer 63

I did and it was 69.2301486334632

Answer 64

you should have x = 6/0.71933980033 = ???

Answer 65

8.340981546200386

Answer 66

yes

Answer 67

so it is 8.3?

Answer 68

yes

Answer 69

can you help me with #1?

Answer 70

one moment

Answer 71

#1 is the one on the very right?

Answer 72

yes

Answer 73

what is sine equal to in terms of the ratios of the sides?

Answer 74

37/12?

Answer 75

hint: it involves 2 of these sides
`opposite`
`adjacent`
`hypotenuse`

Answer 76

this page may help
http://www.mathwords.com/s/sohcahtoa.htm

Answer 77

12/37

Answer 78

why

Answer 79

sine is hypotenuse/opposite

Answer 80

close but no

Answer 81

is it 37/35

Answer 82

`sine is hypotenuse/opposite`
look at that link I sent

Answer 83

this one
http://www.mathwords.com/s/sohcahtoa.htm

Answer 84

37/35

Answer 85

please stop randomly guessing

Answer 86

read the link I posted and tell me which two sides are involved and how sine is set up

Answer 87

12/37.

Answer 88

why is it 12/37 ?