1.

A(1,7), B(2,4) and C(k,5) are the vertices of a right triangle . Find k (1) if angle A = 90^(@) (2) if angle B = 90^(@)and (3) if angle C = 90^(@)

Answer»


ANSWER :(1) k = - 5
(2) k = 5
(3) k = 0 or k = 3


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