Angles in triangle

Calculate the alpha angle in the triangle if beta is 61 degrees and 98 gamma degrees.

Result

α =  21 °

Solution: Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! Next similar math problems: The size of two internal angles of a triangle ABC are α=6/18π and β=7/18π. Calculate the size of the third angle.
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