Which of the following equations can be used to find the length of bc?

Your answer would be C.

For this case, by definition, we have that the Pythagorean theorem is given by:

Where,

c: length of the hypotenuse

a, b: lengths of the sides of the triangle

Therefore, applying the Pythagorean theorem for the triangle of the figure, we have:

The equation for the length of BC is:

option C.

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