In a triangle ABC = 4 cm B = 60 angle C = 45 find the AC side.

univerkov | August 11, 2021 | education

Since the sum of the angles of the triangle is 180 degrees, the value of the angle A will be equal to:

180 – 60 – 45 = 75

Let’s use the sine theorem:

| BC | / sin (A) = | AC | / sin (B)

| AC | = 4 * sin (60) / sin (75) = 4 * √3 / 2 * 0.97 = 3.36.

Answer: the desired side is 3.36 cm.

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