Discussion in 'The Lounge' started by colbystephens, Oct 11, 2006.
you only have the three lengths of the sides? this is not a right triangle.
this is a cool website... http://ostermiller.org/calc/triangle.html. but i still wanna know the formula.
If I know it from memory or have to figure it out. Triangle angles = 180* find the ratio of the sides to each other and divide 180* by those ratios. Ratios with 1-1-2 the angles = 45*45*90*. I'm not a teacher, that the best I can explain it.
Cos(x)= adjacent/ hypotenuse
Inverse of the above, when the appropriate lengths for the trig function are entered should give you the value of x.
and so on.
Right? its been a while since trig.
That would be it. I'm taking this damn class right now. I hate trig...........
Trig only works on right triangles, right?
trig doesn't only work on right triangles, but the equations posted do only work on right triangles. the only trig function i know that does work on non-right triangles is:
You need to use the law of cosines.
a^2 = b^2 + c^2 - ((2ab)cos(C))
Once you find (C), work from there
EDIT- found a nice applet:
Separate names with a comma.