Does anyone know how to find the length of the third side of a non-right triangle?

Update:

I know that angle a=95 degrees, and side b=30 and side c=20

Update 2:

I also know that sinA/a=SinB/b=SinC/c

5 Answers

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  • 1 decade ago
    Favorite Answer

    The sum of all angles in a triangle is 180. So if you know two of the angles of a non-right triangle, or if you know one of the non-90 degree angles of a right triangle, you can fingure out the remaining one by subtracting the two you do know from 180.

  • Dr. J.
    Lv 6
    1 decade ago

    Drop a height in front of angle A to make two right angle triangles. Solve from there.

  • 1 decade ago

    Use the law of cosines: a^2 = b^2 + c^2 -2bc cos A.

  • 1 decade ago

    You want the Law of Cosines. Link below gives explanation and onscreen calculator.

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  • raj
    Lv 7
    1 decade ago

    given what?

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