pada pada gambar disamping ABC siku-siku di B nilai x adalah
[tex] {ac}^{2} = {ab}^{2} + {bc}^{2} \\ {(x + 1)}^{2} = {x}^{2} + {7}^{2} \\ {x}^{2} + 2x + 1 - {x}^{2} = 49 \\ 2x = 49 - 1 \\ x= \frac{48}{2} = 24 \: ( \: d \: )[/tex]
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