Question

In triangle ABC, angle B = 90°,angle A = 30 °, AC = 14,then find BC

Answer 1

Answer:

BC = 7 units

Step-by-step explanation:

We know that,

∠A = 30°

∠B = 90°

AC = 14 units

Now,

Sin A = BC/AC

∠A = 30°

Sin 30° = BC/14

14 × Sin 30° = BC

We know that,

Sin 30° = 1/2

Thus,

BC = 14 × 1/2

∴ BC = 7 units

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