anonymous
  • anonymous
i want to find the area of a triangle with the given angles A=32˚ C= 77˚ a=71cm. I got the answer about 48.5sqcm but the answer says 170sqcm..How is this possible? click attached.http://bamboodock.wacom.com/doodler/0cb3063d-8c0b-4902-82c1-055993bc5aba
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
you on?
anonymous
  • anonymous
yes i am! my computer froze
anonymous
  • anonymous
okay no biggie

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anonymous
  • anonymous
let me ask some questions here. First when you did the work did you check the signs like + - because the could cause a problem also in the first part explain this a little I am just trying to understand
anonymous
  • anonymous
um i think i am doing it right.
anonymous
  • anonymous
okay than where did 180 come from?
anonymous
  • anonymous
I did to know the whole problem not just answers
anonymous
  • anonymous
180 is the total of the 3 angles of the traignle
anonymous
  • anonymous
since i know A=32 and C=77 B= 71 from 180-32-77
anonymous
  • anonymous
did you plug for for these?
anonymous
  • anonymous
did you a and put in it for a
anonymous
  • anonymous
the formula to find an area of a triangle with 2 angles and one side given is area= a^2sinBsinC / 2sinA
anonymous
  • anonymous
so i did like this
1 Attachment
anonymous
  • anonymous
am i wrong or is this book stupid...? lol
alexwee123
  • alexwee123
im just curious is this geometry or trig? o.0
anonymous
  • anonymous
its in trig.
alexwee123
  • alexwee123
oh ok then maybe you can check this site out http://www.regentsprep.org/Regents/math/algtrig/ATT13/areatriglesson.htm it gives a better formula and solution :D
anonymous
  • anonymous
ok ok...i think u should try to change your calculator settings to degrees and not radians!
anonymous
  • anonymous
its in degrees...i already tried doing that...
anonymous
  • anonymous
what is the answer?
anonymous
  • anonymous
wait a seocnd...i'll put my numbers up...i got approximately 170.3...check for yourself...
anonymous
  • anonymous
same here..
anonymous
  • anonymous
i got 61.63 but the book says 170...
anonymous
  • anonymous
I think the second part is wrong somehow
anonymous
  • anonymous
|dw:1344138495546:dw|
anonymous
  • anonymous
yep that is what is wrong forgot to put the a b c in the problem
anonymous
  • anonymous
in other words sub in
anonymous
  • anonymous
wait how did you get 180.57.?? i cant got 188.36
anonymous
  • anonymous
ok...lets take even more baby steps! what did u get for sin71 x sin77?
anonymous
  • anonymous
cfraser should I go and let you help or stay??
anonymous
  • anonymous
i can help...i guess...!
anonymous
  • anonymous
sin77= 0.9744 sin71= 0.9455
anonymous
  • anonymous
im so sorry ><
anonymous
  • anonymous
y?
anonymous
  • anonymous
for making you guys have a hard time....
anonymous
  • anonymous
nah don't worry about it
anonymous
  • anonymous
thank you! so does this look okay so far?
anonymous
  • anonymous
haha! no problem...most of us are here to help and make ourselves feel better anyways! lol...and actually 186 is right! (i mistyped!)
anonymous
  • anonymous
what did u get for 2sin32?
anonymous
  • anonymous
ha ha typo wow get love trig on a computer ha ha
anonymous
  • anonymous
2sin32 = 1.0598
anonymous
  • anonymous
okay...so, divide those two numbers!
anonymous
  • anonymous
dont round them up like me! the more digits...the better!!
anonymous
  • anonymous
i got 177.39
anonymous
  • anonymous
yes
anonymous
  • anonymous
hmm...so...thats much closer to 170! lol
anonymous
  • anonymous
isnt it lose to 180....?lol
anonymous
  • anonymous
yeah, but who is keeping track lol
anonymous
  • anonymous
better than 48.5! :)
anonymous
  • anonymous
lol
anonymous
  • anonymous
HEY i got it
anonymous
  • anonymous
sweet! great!!
anonymous
  • anonymous
GREAT JOB!!
anonymous
  • anonymous
thanks a lottttt!!!!
anonymous
  • anonymous
glad to help :)
anonymous
  • anonymous
same feeling here!
anonymous
  • anonymous
cfraser007 nice job!!
anonymous
  • anonymous
thanks :D!

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