Question

In triangle ABC , angle B=90°, AC= 12 cm, BC= 6cm . Find the measure of angle A​

Answer 1

Answer:

30 degrees

Step-by-step explanation:

B is 90 degrees.

AC = hypoteneus = 12 cm.

BC = perpendicular = 6 cm.

sin A = perpendicular / hypoteneus = 1/2 = sin 30 degrees

=> A = 30 degrees

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Answer 2

Answer:

$\sin(a) = \frac{6}{12} \\ \sin(a) = \frac{1}{2} \\ \sin(30) = \frac{1}{2}$

Therefore, /_A = 30°

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