1.

Find direction cosines of the line passing through the poins P(-2, 4, -5) and C(1, 2, 3).

Answer»


ANSWER :DC's are `((x_2-x_1)/PQ, (y_2-y_1)/PQ, (z_1-z_2)/PQ) = ((3)/sqrt77, (-2)/sqrt77, (8)/sqrt77)`


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