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3 years ago

ILL BRAINLIEST YOU IF YOU PLEASE HELP ME

Mathematics

1 answer:

Harrizon [31]3 years ago

6 0

Answer:

BC ≈ 20.9

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

BC² + AC² = AB²

BC² + 7² = 22²

BC² + 49 = 484 ( subtract 49 from both sides )

BC² = 435 ( take the square root of both sides )

BC = $\sqrt{435}$ ≈ 20.9 ( to the nearest tenth )

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Step-by-step explanation:

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Alternatively, you can solve this question using the definition of the trigonometric function sine. For the angle $\theta$ in the figure below,

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