SOLUTION: I am a little rusty with this, but a triangle with 50/65/65 degree angles. The side between the 65 degree angles is 60 inches, what is the lenght of the other 2 sides??

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Question 1750: I am a little rusty with this, but a triangle with 50/65/65 degree angles. The side between the 65 degree angles is 60 inches, what is the lenght of the other 2 sides??
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
ok...first things first..the triangle is isosceles...2 equal angles...2 equal sides. Find one unknown side and the other is te same length.
Use the sine rule when you know "an angle and its opposite side length"...
sine rule says %28a%2FsinA%29+=+%28b%2FsinB%29
so...
%2860%2Fsin50%29+=+%28b%2Fsin65%29
Re-arranging gives...
b+=+%2860%2Asin65%29%2F%28sin50%29

You work it out. Both unknown lengths are this length.

cheers
Jon.