briana.img
  • briana.img
One last question for the night, solve triangle XYZ
Mathematics
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briana.img
  • briana.img
One last question for the night, solve triangle XYZ
Mathematics
jamiebookeater
  • jamiebookeater
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briana.img
  • briana.img
misty1212
  • misty1212
HI!! (again) best to draw it
briana.img
  • briana.img
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briana.img
  • briana.img
i'm nver confident on the sides i draw them on
misty1212
  • misty1212
wow if you don't mine me saying so, that is the ugliest triangle i have ever seen!!
misty1212
  • misty1212
let me try one
briana.img
  • briana.img
LMAO MISTTTYY
misty1212
  • misty1212
|dw:1436503397981:dw|
misty1212
  • misty1212
ok not terrific, but it least it has straight sides !
misty1212
  • misty1212
good to fill in the 52 right away as before \[180-39-88=53\]
briana.img
  • briana.img
@misty1212 oooh okay okay i see you so we just need to figure out the side leghts
misty1212
  • misty1212
right you notice the answer choices all have \(X=53^\circ\) so that was kind of a no brainer
briana.img
  • 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
  • briana.img
@misty1212 got 55.9
misty1212
  • 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
  • briana.img
@misty1212 the notes that i took from my course are like that haha just following the examples in my notes
misty1212
  • misty1212
\[\frac{x}{\sin(53)}=\frac{70}{\sin(88)}\]
misty1212
  • misty1212
so \[x=\frac{70\sin(53)}{\sin(88)}\]
misty1212
  • misty1212
http://www.wolframalpha.com/input/?i=70sin%2853%29%2Fsin%2888%29
misty1212
  • misty1212
yeah 55.9
misty1212
  • misty1212
still have two choices, so need z
briana.img
  • briana.img
@misty1212 so now \[\frac{ 70 }{ \sin88 } = \frac{ z }{ \sin39 }???\]
misty1212
  • misty1212
yah
misty1212
  • misty1212
http://www.wolframalpha.com/input/?i=70sin%2839%29%2Fsin%2888%29
briana.img
  • briana.img
@misty1212 so i got 44.07 so it would mean that D is the answer
misty1212
  • misty1212
idk let me look
misty1212
  • misty1212
yeah looks good i love how they put in the numbers they give you too!
misty1212
  • misty1212
you done for the night?
briana.img
  • 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
  • misty1212
why are you crying? you got all of these !!
misty1212
  • 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
  • briana.img
@misty1212 math usually just makes me feel really really dumb and usually feel liek giving up
misty1212
  • 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
  • briana.img
@misty1212 yeah i've been doing fine with the other lessons but this lesson just really didn't stick at all
misty1212
  • misty1212
especially compared to some who are doing problems just has hard but don't even know the basic trig ratios
briana.img
  • briana.img
@misty1212 yikes that's hella scary but thanks a lot misty you really saved me tonight and really made me understand
misty1212
  • 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
  • misty1212
your welcome maybe i see you some other night
misty1212
  • misty1212
lol "you're welcome"
xapproachesinfinity
  • 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
  • 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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