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Anna007 [38]
2 years ago
15

Find the length of side AB. Round your answer to the nearest tenth:

Mathematics
1 answer:
emmainna [20.7K]2 years ago
4 0

Answer:

Step-by-step explanation:

You are going to be using the Cos function.

<B = 50 degrees

BC = 2

AB is what you want

Cos(50) = adjacent /  hypotenuse

Cos(50) = 2/hypotenuse                 Multiply both sides by the hypotenuse.

hypotenuse*Cos(50) = 2                 Divide by cos(50)

hypotenuse = 2 / cos(50)                Cos(50) on the left cancels. Divide.

hypotenuse = 2 / .6428

hypotenuse = 3.111 = 3.1

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