Respuesta :

X equals 29 and you solve using the Pythagorean theorem

Answer:

C = 29

Step-by-step explanation:

using pythagoras theorem since the angle is a right angled triangle

it states that hypothenus²= opposite² + adjacent²

the hypothenus is always the longest side

opposite and adjacent are interwoven

hyp² = 20² +21²

hyp² = 400 + 441

hyp² = 841

hyp = √841 = 29

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