Question

Use the triangle below. Find the length of the missing side. If necessary, round to the nearest tenth. b = 12 and c = 13

Answer 1

Answer:

☆The length of the missing side is 5.

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Step-by-step explanation:

☆Remember, Pythagorean theorem!

It looks like: ${a}^{2} + {b}^{2} = {c}^{2}$

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☆All we need to do is plug in!

${a}^{2} + {b}^{2} = {c}^{2} \\ {a}^{2} + {12}^{2} = {13}^{2} \\ {a}^{2} + 144 = 169 \\ \frac{\: \: \: \: \: \: \: \: - 144 = - 144}{ {a}^{2} = \sqrt{25} } \\ a = 5$

☆Therefore the value of A is 5.