geometry · worked example

Solve 兩股長分別為 9 與 12 的直角三角形 — c = 15

Method: 畢氏定理. Verified step-by-step solution with our free AI math solver.
Problem

a2+b2=c2, a=9, b=12a^2 + b^2 = c^2,\ a=9,\ b=12

Step-by-step solution

  1. 套用 a2+b2=c2a^2 + b^2 = c^281+144=c281 + 144 = c^2,所以 c2=225c^2 = 225

  2. 取正平方根:c=15c = 15

  3. (9,12,15)(9, 12, 15)(3,4,5)(3, 4, 5) 這組數放大 33 倍的結果。

Answer

c=15c = 15

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