In triangle ABC AB = 18 cm, angle B-30 degrees, angle C = 90 degrees. Find the distance from point A to line BC?
| August 4, 2021 | education
Angle C = 90 °, which means triangle ABC is rectangular. The BC and AC sides are the legs, and the AB side is the hypotenuse. We know the angle B, equal to 30 °. By the hypotenuse and angle, we can find the AC leg. The leg AC is the distance from point A to line BC.
AC = 18 * sin 30 ° = 18 * 1/2 = 9 cm.
Answer: 9 cm.
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