Question

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

Answer 1

you on?

Answer 2

yes i am! my computer froze

Answer 3

okay no biggie

Answer 4

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

Answer 5

um i think i am doing it right.

Answer 6

okay than where did 180 come from?

Answer 7

I did to know the whole problem not just answers

Answer 8

180 is the total of the 3 angles of the traignle

Answer 9

since i know A=32 and C=77 B= 71 from 180-32-77

Answer 10

did you plug for for these?

Answer 11

did you a and put in it for a

Answer 12

the formula to find an area of a triangle with 2 angles and one side given is area= a^2sinBsinC / 2sinA

Answer 13

so i did like this

Answer 14

am i wrong or is this book stupid...? lol

Answer 15

im just curious
is this geometry or trig? o.0

Answer 16

its in trig.

Answer 17

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

Answer 18

ok ok...i think u should try to change your calculator settings to degrees and not radians!

Answer 19

its in degrees...i already tried doing that...

Answer 20

what is the answer?

Answer 21

wait a seocnd...i'll put my numbers up...i got approximately 170.3...check for yourself...

Answer 22

same here..

Answer 23

i got 61.63 but the book says 170...

Answer 24

I think the second part is wrong somehow