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Mathematics 23 Online
OpenStudy (anonymous):

i have to find x https://wbasecure.aplusanywhere.com/R85Content/media/pictures/geo_nbg/g30_t13.gif?ts=1407597433738

OpenStudy (imstuck):

Use the sin identity for the 70 degree angle. Can you do that? Or do you need help?

OpenStudy (anonymous):

http://openstudy.com/users/brainybeauty

OpenStudy (anonymous):

i dont know how bro

OpenStudy (imstuck):

I'm not a bro, but I'll help you anyways.

OpenStudy (anonymous):

oopps sorry chica

OpenStudy (anonymous):

ok thanks

OpenStudy (imstuck):

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OpenStudy (imstuck):

|dw:1407626516489:dw|

OpenStudy (jdoe0001):

thanks IMStuck bro, u r da bestest in da huhd

OpenStudy (anonymous):

she´s a girl

OpenStudy (imstuck):

|dw:1407626558640:dw|

OpenStudy (anonymous):

yea she da best tho

OpenStudy (imstuck):

Yes, I'm a girl. Actually I'm a high school math teacher, guys!

OpenStudy (anonymous):

oh dats cool

OpenStudy (imstuck):

Anyways, your side is 13.15569, rounded it to 13.16 See that?

OpenStudy (anonymous):

im a high school super hero

OpenStudy (imstuck):

TY for the compliment! That was nice!

OpenStudy (anonymous):

one question. did u Round to two decimals at each step of the problem.

OpenStudy (imstuck):

I see you're a superhero! That's awesome as well! lol

OpenStudy (anonymous):

no prob

OpenStudy (imstuck):

The only thing that would need rounding is the value for the sine of 70 but I didn't round until the end. DO NOT ROUND til the end, ok?

OpenStudy (anonymous):

ok

OpenStudy (imstuck):

You should be good then. Do you know SOHCAHTOA?

OpenStudy (anonymous):

u seem like a really young teacher. no offense but how old r u?

OpenStudy (imstuck):

44

OpenStudy (imstuck):

Married 20 years and 5 kids (who do not like math as much as I do!)

OpenStudy (anonymous):

ok

OpenStudy (imstuck):

I like to think that my students can relate to me; they listen much better that way!

OpenStudy (anonymous):

i got another problem

OpenStudy (imstuck):

It was a pleasure to help you! I also work on tutor.com (NOT a free help site) with Algebra 1 and 2 and Geometry.

OpenStudy (imstuck):

What's your other problem? Hopefully it's math related!?

OpenStudy (imstuck):

TY for the medal, btw.

OpenStudy (anonymous):

its also trig but im not really good at trig so i need quite a bit of help i have to find x https://wbasecure.aplusanywhere.com/R85Content/media/pictures/geo_nbg/g3016t1.gif?ts=1407598209636

OpenStudy (anonymous):

no prob

OpenStudy (imstuck):

I love trig! of course.

OpenStudy (anonymous):

ok yes. thanx so much

OpenStudy (imstuck):

Here you would use the cosine of the angle measure. \[\cos(39)=\frac{ x }{ 12.1 }\]

OpenStudy (anonymous):

ok

OpenStudy (imstuck):

\[12.1\cos(39)=x\]

OpenStudy (imstuck):

Do you have your calculator?

OpenStudy (imstuck):

And it must be in degrees for this, not radians.

OpenStudy (anonymous):

yea one sec

OpenStudy (imstuck):

cos(39) =

OpenStudy (anonymous):

is it 0.266

OpenStudy (anonymous):

or 0.777

OpenStudy (imstuck):

cos(39) = .7771459615

OpenStudy (imstuck):

.266 is in radians. Not needed here; we need degrees.

OpenStudy (imstuck):

Now multiply the .7771459615 by 12.1. What do you get?

OpenStudy (anonymous):

ok i thoughtthat it was in radians that is why i changed my answer

OpenStudy (imstuck):

good job!

OpenStudy (imstuck):

Whats the measure of your missing side?

OpenStudy (anonymous):

9.403

OpenStudy (imstuck):

Very good! That's right! Good job!

OpenStudy (anonymous):

ok this is a little more complicated

OpenStudy (anonymous):

i have to find the length of w https://wbasecure.aplusanywhere.com/R85Content/media/pictures/geo_nbg/8_4_88.gif?ts=1407598887534

OpenStudy (anonymous):

r u still there?

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