In triangle ABC, angle C = 90 degrees, AC = 20, tgA = 0.5 Find BC

In a right-angled triangle, the tangent of an acute angle is equal to the ratio of the length of the leg opposite to the angle to the length of the adjacent leg.

tgA = BC / AC.

BC = AC * tgA = 20 * 0.5 = 10 cm.

Answer: The length of the BC leg is 10 cm.

 



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