If the unequal angle of a isosceles triangle is \[{{50}^{o}}.\] find the measure of one of the equal angles of the triangle.

• A. \[{{60}^{o}}\]
• B. \[{{65}^{o}}\]
• C. \[{{70}^{o}}\]
• D. \[{{75}^{o}}\]
• E.  None of these