Saved Bookmarks
| 1. |
ABC is right angle triangle with ACB=90*, BC=12cm, AB=15cm, and CD=5cm.Find the lengths of AD. |
Answer» In TRIANGLE BDCBD²= BC²+CD² BD² = 12² + 5² BD² = 144 +25 BD² = 169 BD = 13cm In Triangle ABC AB²= AC² + BC² 15² = AC² + 12² 225 = AC² + 144 AC² = 225 - 144 AC² = 81 AC = 9 We know that AC = AD + CD SO, 9 = AD + 5 AD = 9-5 AD = 4 |
|