Question

Help with Geometry! Please help!

Answer 1

well we know it's on jupiter because it's frmo jupiter images corporation, where gravity is different than here

Answer 2

do you know trigonometry? e.g sin, cos and tan?

Answer 3

Lol! um, not really. I'm really bad at geometry.

Answer 4

the first one, I just want to know if it's right. The second one, is my main concern

Answer 5

do you know the definition of sin in a triangle?

Answer 6

No, I just started the class.

Answer 7

did they give you a textbook or something? i mean how are you supposed to solve it?

Answer 8

No, not yet. Our teacher said to look online or ask friends or family members. Terrible teacher.That's why im asking

Answer 9

OK well in a right triangle, which is what you have, the sine of an angle is the length of the side opposite to the angle, divided by the hypotenuse (long side)

Answer 10

so it's 49/55?

Answer 11

in other words sin(x) is opposite / hypotenuse, i.e. sin(x) = 29.7 / 42.1

Answer 12

i was doing the bird problem

Answer 13

Oh okay.

Answer 14

how did you get 45.1?

Answer 15

its 0.70546318 but that's not a choice..

Answer 16

well sin(x) is 29.7/42.1, but you have to take the "arc sin" with your calculator to get the final answer

Answer 17

in other words sin(x) is 0.705

Answer 18

arc-sin tells you what angle has the sin of that value

Answer 19

it's like the opposite of sin

Answer 20

Correct so in my calculator i put 0.705 X 29.7/42.1?

Answer 21

no, 29.7/42.1 is 0.705, that's what you computed. now you take the arc-sin of that value.

Answer 22

what's the arc? lol i'm sorry im so bad.

Answer 23

there's a button on your calculator somewhere that says "sin -1" or something

Answer 24

that's the "reverse sin" which is what math people call arcsin

Answer 25

so how to i input it in my calculator?

Answer 26

you have to find the button labelled sin-1, then type in 0.705 and push that

Answer 27

it says 0.012304260738492

Answer 28

hmm, that's not right, are you sure you're in degree mode?

Answer 29

that's the button i pressed.

Answer 30

oh ok. that's the sin of 0.705, not the arcsin

Answer 31

you might have to push "alt" or "shift" or something

Answer 32

0.764.........?

Answer 33

no

Answer 34

i don't know what kind of calculator you have so i can't really tell you how to use it

Answer 35

i pressed now a button that said "sinh"

Answer 36

is there a button that says "arcsin" or sin ^-1?

Answer 37

sinh is something different

Answer 38

no it says sin by itself and i got the first answer i gave you.

Answer 39

ok well you can use the google calculator. https://www.google.com/search?q=arcsin(1)&aq=f&sugexp=chrome,mod=1&sourceid=chrome&ie=UTF-8#hl=en&safe=off&sclient=psy-ab&q=arcsin(29.7%2F42.1)+in+degrees&oq=arcsin(29.7%2F42.1)+in+degrees&gs_l=serp.3...2482.3786.1.3887.11.11.0.0.0.0.104.493.10j1.11.0.les%3B..0.0...1c.1.XSjiv7n6QAo&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=bf525e541b623bda&biw=1075&bih=892

Answer 40

Thanks! maybe i just don't know how to use the calculator.

Answer 41

and the second one, do i do the same thing? or no?

Answer 42

no, can you figure out how to set it up, given that sin of an angle is opposite over hypotenuse?

Answer 43

sin(angle) = opposite / hypotenuse. can you substitute the two things you know from the diagram into that equation?

Answer 44

is it (sinx) 49/55?

Answer 45

nope

Answer 46

then I don't know :(

Answer 47

the equation is sin(angle) = opposite / hypotenuse. what's the angle?

Answer 48

49

Answer 49

right so substitute that in, what do you get so far?

Answer 50

sin(49) = x/55

Answer 51

yes, great!

Answer 52

ok so now isolate x, what do you get?

Answer 53

49=55?

Answer 54

that doesn't make sense, 49 can't equal 55 :-)

Answer 55

what happened to the x?

Answer 56

can you start with sin(49) = x / 55 and isolate x, using algebra? i.e. move the 55 to the other side so x is alone?

Answer 57

um x = 49/55?

Answer 58

@ktklown

Answer 59

no, that seems like you just moved numbers around randomly.

Answer 60

idk how to do it then

Answer 61

have you taken algebra?

Answer 62

yes but only algebra 1

Answer 63

ok but you know how to rearrange equations right?

Answer 64

if A = B/C, how do you isolate B?

Answer 65

subtract it from both sides

Answer 66

no you have to multiply

Answer 67

so what do you get?

Answer 68

oh thats right cause you're dividing

Answer 69

so is it b=a/c

Answer 70

no. multiply both sides by C, what do you get?

Answer 71

b= c/a

Answer 72

b=c*a

Answer 73

@ktklown

Answer 74

what's the answer just tell me.I'm stupid and won't get it. please