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

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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

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you on?
yes i am! my computer froze
okay no biggie

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

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