Question

Помогите срочно!!!!! Даю 20 балов

Answer 1

Ответ:

$\cot( \alpha ) = \frac{ac}{bc}$

$ac = \cot( \alpha ) \times bc = 80 \times \frac{15}{8} = 150$

по теореме Пифагора

${ac}^{2} + {bc}^{2} = {ab}^{2}$

${80}^{2} + {150}^{2} = {ab}^{2}$

$ab = \sqrt{6400 + 22500} \\ ab = 170$