One last question for the night, solve triangle XYZ

- briana.img

One last question for the night, solve triangle XYZ

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- briana.img

##### 1 Attachment

- misty1212

HI!! (again)
best to draw it

- briana.img

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## More answers

- briana.img

i'm nver confident on the sides i draw them on

- misty1212

wow if you don't mine me saying so, that is the ugliest triangle i have ever seen!!

- misty1212

let me try one

- briana.img

LMAO MISTTTYY

- misty1212

|dw:1436503397981:dw|

- misty1212

ok not terrific, but it least it has straight sides !

- misty1212

good to fill in the 52 right away as before \[180-39-88=53\]

- briana.img

@misty1212 oooh okay okay i see you so we just need to figure out the side leghts

- misty1212

right
you notice the answer choices all have \(X=53^\circ\) so that was kind of a no brainer

- briana.img

@misty1212 omg youre right haha well i got down to it and i'm at \[\frac{ \sin88 }{ 70 }=\frac{ \sin53 }{ x }\] i just put x for no reason

- briana.img

@misty1212 got 55.9

- misty1212

a) we should the x for sure because there is an x there
b) it is silly to put the variable in the denominator !

- briana.img

@misty1212 the notes that i took from my course are like that haha
just following the examples in my notes

- misty1212

\[\frac{x}{\sin(53)}=\frac{70}{\sin(88)}\]

- misty1212

so
\[x=\frac{70\sin(53)}{\sin(88)}\]

- misty1212

http://www.wolframalpha.com/input/?i=70sin%2853%29%2Fsin%2888%29

- misty1212

yeah 55.9

- misty1212

still have two choices, so need z

- briana.img

@misty1212 so now \[\frac{ 70 }{ \sin88 } = \frac{ z }{ \sin39 }???\]

- misty1212

yah

- misty1212

http://www.wolframalpha.com/input/?i=70sin%2839%29%2Fsin%2888%29

- briana.img

@misty1212 so i got 44.07 so it would mean that D is the answer

- misty1212

idk let me look

- misty1212

yeah looks good
i love how they put in the numbers they give you too!

- misty1212

you done for the night?

- briana.img

@misty1212 yeah i wanna keep going but i know i should stop because i keep getting really frustrated and feel like crying but thanks a lot misty i've never been so lost in a unit

- misty1212

why are you crying? you got all of these !!

- misty1212

law of sines and cosines not as bad as a lot of trig for sure
identities are much worse
and solving equations

- briana.img

@misty1212 math usually just makes me feel really really dumb and usually feel liek giving up

- misty1212

once you get the hang of it, you will think it is easy, trust me
it is frustrating learning for sure, and i get the impression this is an on line class so it is kind of diy
but don't give up
plus you can always ask here
seems like you are doing ok to me

- briana.img

@misty1212 yeah i've been doing fine with the other lessons but this lesson just really didn't stick at all

- misty1212

especially compared to some who are doing problems just has hard but don't even know the basic trig ratios

- briana.img

@misty1212 yikes that's hella scary but thanks a lot misty you really saved me tonight and really made me understand

- misty1212

maybe you got stuck on the proofs, the mechanics of solving triangles gets routine though
law of sines, law of cosines, that is all

- misty1212

your welcome
maybe i see you some other night

- misty1212

lol "you're welcome"

- xapproachesinfinity

If two angles were given and one side I would immediately think of law of sine.
When two sides are given with an angle makes sense to use law of cosine

- xapproachesinfinity

It's all about practice to master the concept! No need to get frustrated as learning new concepts take some time to sink in. Just keep practicing

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