If two right sides a and B of a right triangle satisfy a + B = 7 and hypotenuse C = 6, then the area of the right triangle is?
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If two right sides a and B of a right triangle are known, satisfying a + B = 7 and hypotenuse = 5, the area of the triangle can be obtained
A = 3, B = 4, area 3 * 4 / 2 = 6
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