the sines of two angles of triangle are 5/13 and 99/101 ...find cosine of third angle?

1)245/313

2)255/313

3)735/1313

4)765/1313

- Jul 11th 2011, 07:23 PMgurparwaanIn a triangle-sine of two angles are given .....find cos of 3rd angle
the sines of two angles of triangle are 5/13 and 99/101 ...find cosine of third angle?

1)245/313

2)255/313

3)735/1313

4)765/1313 - Jul 11th 2011, 11:59 PMSorobanRe: In a triangle-sine of two angles are given .....find cos of 3rd angle
Hello, gurparwaan!

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