Question

What am I doing wrong? Please help!
Steps I took in comments below
http://prntscr.com/9at98m

Answer 1

\[9\sin{\theta}-5\rightarrow 9\sin{\theta}=5\rightarrow\sin{\theta}=\frac{5}{9}?\]

Answer 2

Much better: one question posted at a time, and you have shared the work you've already done. sin theta = 5/9 is solveable for theta. First, y ou might want to graph the function sin theta between -2pi and 2pi to get an idea (rough idea) of the angles "theta" at which the sine has the value +5/9.

What type of calculator are you using?

Have you set the calculator to DEGREE mode?

Answer 3

I don't know how to use "degree mode" on WolframAlpha.
My graphing calculator broke.

Answer 4

About your first comment: You or I could boot your question to the top of the queue if you don't get responses fast. Secondly, if you leave your problem posted and open, someone is likely to answer it when the number of users increases. That's dependent upon the day and the time, as I explained earlier.

Answer 5

We know that \[\sin \frac{ 5 }{ 9 } =\theta\]

Answer 6

is the answer, but it's in implicit form. We have to solve this equation for theta. How would you do that if your calculator were not broken?

Answer 7

I am not getting feasible results for \[\arcsin{\frac{5}{9}}\]

Answer 8

I've set my TI-83Plus calculator to degree mode and am typing in the following:\[\sin ^{-1}\frac{ 5 }{ 9 }\]

Answer 9

result: 33.749 degrees. Now all you have to do is to convert 0.749 degrees to minutes and seconds. Can you do that?

Answer 10

Degrees and seconds are not accepted

Answer 11

Oh, one decimal place... .7 or .8?

Answer 12

http://prntscr.com/9atev6

Answer 13

What do you think? Round off 33.7489886 to 1 decimal place.

Answer 14

33.8

Answer 15

I typed into Wolfram the following: arcsin 5/9, and quickly got a value for theta in radians. You'd have to convert that into degrees and then round off.

Answer 16

Okay

Answer 17

I disagree with that 33.8 degrees answer. Take another look at your round-off work.

Answer 18

Practice: round off 33.312 degrees to 1 dec. place.
round off 33. 89 to 1 dec. place.

Answer 19

I asked this question previously on another site and was told it was 33.8... I guess that person was not a qualified math expert then.
33.7?

Answer 20

Yes. The rule is: 33.749... is rounded down to 33.7, whereas 33.750 or greater is rounded up to 33.8.

Answer 21

I thought so too, but that person insisted it was 33.8 No idea why.

Answer 22

always good to double check if y ou disagree with a helper. But do it politely and privately.

Answer 23

Care to move on to another problem?

Answer 24

Okay, if I can wrangle this lag >_>;

Answer 25

Also, what's with the other answer, theon?

Answer 26

"wrangle this lag" ... Never heard that particular phrase before. Still mad about the long waits?

Answer 27

Well, no; the entire site is laggy.

Answer 28

http://prntscr.com/9athhh

Answer 29

sin theta =5/9 has TWO solutions between 0 and 180 degrees. Know how to find the 2nd solution?

I quit OpenStudy for a year partly because I was fed up with the mechanical delays. But I still think my advice is good: Learn when a couple of dozen users are on, and then ask for help during such time periods.

Answer 30

AUGH THIS LAG!
Um, +360?

Answer 31

Re: "what's wioth the 2nd answer?" I was asking you how you'd find it. As before, there are 2 solutions between 0 and 180?

Answer 32

mistyped

Answer 33

I really hate this lag.

Answer 34

It says o < theta < 360

Answer 35

well < or = but yeah

Answer 36

Enuf. I can't do anything about the delays; Have to live with it. OpenStudy is free. Where else would you get free math help? Patience, please.

If you'd look at the graph of the sine function, you'd see that sin theta =5/9 is possible ONLY in Quadrants I and II.

Answer 37

Hint: simply subtract 33.749 from 180 degrees and then round off the answer to 1 decimal place.

Answer 38

The resulting angle will be in QII.

Answer 39

I'm not complaining about the lags but it is the reason why I keep messing up/not typing thisngs in right

Answer 40

well, that and I can't see half your replise because of this lag

Answer 41

sin theta = 5/9 has no solutions in QIII or IV

No, OpenStudy is NOT the reason for that.

Please, let's focus on math if y ou still want math help.

Answer 42

So, your two solutions, to 1 dec. place each, are 33.7 degrees and ... ???

Answer 43

I mean I mistype things because I type fast and this site lags. It's happened before.
Example: "replies" was mystped as "replise"

Answer 44

so what? i can interpret replise ans "replies."
One mroe question? No more complaints, please.

Answer 45

How is this a complaint? OS has had lag problems for ages...
180-33.7=146.3

It literally took me eight minutes to type up a response. How is that not lag?

Answer 46

Is the result wrong because of the 33.8, then?

Answer 47

I have to deal with it also. Enuf, please.

One more chance: want to discuss another problem (without mention of "lag") or not?

Answer 48

Yes, if your 2nd answer was "wrong," that was because of the incorrect rounding.

Answer 49

And that tutor on the other website insisted it was 33.8 ...

Answer 50

I guess I should not believe them so readily

Answer 51

I'm getting 33.7 and 146.3 as well. If the second answer doesn't work, then there may be a typo somewhere?

Anyways, there is one neat way to compute trig inverses using google. Google can be used as a calculator. Type in "arcsin(5/9) in degrees" without quotes. You have to stick "in degrees" in there because google defaults in radian mode for some reason

See the attached image

Answer 52

I did ask but they insisted it was 33.8, no idea why.
It worked, but thank you for that @jim_thompson5910

Answer 53

kitti: the world is not always exactly as we want it to be. I am sorry, but that's life.

I wanted you to post or ask another question, not another complaint.

I'm going to take a break from this. Glad to help you again when you can stifle complaints. Our math discussion was good, and I appreciate that. Bye for now.

Answer 54

http://prntscr.com/9atnn7

I was only explaining why I can't respond as quickly, because I've been subject to anger just for lagging. But if that's interpreted as complaining, then I don't know which one would please tutors more! -_-

Answer 55

And yes, that link is another question

Answer 56

As I said, I'm off for a while. Frankly tired of complaints.

Answer 57

It's not a complaint. I need to explain to people because apparently nobody else lags enough to understand that I'm trying to get help without wasting other people's time.

"Why are you taking so long to respond? Are you needing help or not?"
"Don't be ungrateful ... you took too long to answer."
These are literal things I've heard from tutors. Am I supposed to just ignore that and not get help because they don't get I'm lagging...?

I'm just trying to understand my own work, and not annoy people because I lag. If explaining that is complaining then idk how to get people to help me without them getting mad.

Answer 58

Plus, you said you wanted another question, so I posted that link. *shrugs*