2006-09-28 14:15:27 · 7 answers · asked by lanxxelot 1 in Science & Mathematics ➔ Mathematics
and if there it is, what is it?
given the (x,y) coordinates, and the lengths of the three sides?
2006-09-28 14:24:17 · update #1
use the law of sines
http://www.ies.co.jp/math/java/trig/seigen/seigen-moji.gif
2006-09-28 14:35:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I assume you know the lengths of all three sides of the triangle. (Otherwise your question has no answer.) Use the law of cosines - it will give you the cosine of whichever angle you want using just the lengths of the sides, and you can then look up the angle in a table. You can do this three times to get all three angles. However, once you figure out one angle, you can also use the law of sines to find the other two angles.
2006-09-28 21:30:51 · answer #2 · answered by wild_turkey_willie 5 · 0⤊ 0⤋
All triangles add up to 180 degrees.
Other than that use, Sin,Cos,Tan
2006-09-29 05:43:51 · answer #3 · answered by radioconcrete 2 · 0⤊ 0⤋
the sum of all the angles in a triangle is always 180 degrees, so if you are given 2 out of 3 angles, subtract those 2 angles from 180
example:
__________|\---- 30 degrees
__________|_\
__________|__\
__________|___\
__________|____\
__________|_____\
90 degrees-|______\----- x degrees
formula----- 180-90-30= 60 degrees
x = 60
2006-09-28 21:31:19 · answer #4 · answered by Anonymous · 0⤊ 0⤋
this site should help you out with all your questions.
http://www.math.com/tables/trig/identities.htm
don't forget about the Cosine Laws for non-right triangles
2006-09-29 00:58:00 · answer #5 · answered by Sherman81 6 · 0⤊ 0⤋
well they all add up to 180 degrees, other than that use sin, cos and tan with the soh cah toa method
2006-09-28 21:17:00 · answer #6 · answered by soggy_dough_nut 2 · 0⤊ 0⤋
Yes, there's a formula for everything.
I just don't remember it, sorry.
However try thiis site:
www.csgnetwork.com
2006-09-28 21:20:13 · answer #7 · answered by Yellowstonedogs 7 · 0⤊ 0⤋