Tentukan panjang a. AB b.BD c.AD
Jawaban:
a. AB = 16
b. BD = 5
c. AD = 11
Penjelasan dengan langkah-langkah:
[tex]ab = \sqrt{ {ac}^{2} - {cb}^{2} } \\ = \sqrt{ {20}^{2} - {12}^{2} } \\ = \sqrt{400 - 144} \\ = \sqrt{256 } = 16[/tex]
[tex]bd = \sqrt{ {cd}^{2} - {cb}^{2} } \\ = \sqrt{ {13}^{2} - {12}^{2} } \\ = \sqrt{169 - 144} \\ = \sqrt{25} = 5[/tex]
AD = AB - BD
= 16 - 5
= 11
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