В треугольнике ABC угол C = 90 градусов . AC = 12 tg A =(2 * корень 10)/3 .Найдите AB. Created by gazieva1201. geometriya-ru

3 .Найдите AB...

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В треугольнике ABC угол C = 90 градусов . AC = 12 tg A =(2 * корень 10)/3 .Найдите AB

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Ant28 $tgA = \frac{BC}{AC} = \frac{AC}{12}; BC= \frac{1}{12}; AB = \sqrt{ \frac{2 \sqrt{10}}{3}^{2} + \frac{1}{12}^{2}} = \sqrt{ \frac{40}{9}+ \frac{1}{144}} = \sqrt{ \frac{641}{144} }$
$AB = \frac{ \sqrt{641} }{12}$

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Answers & Comments

najdite skorost rasprostraneniya zvuka v materiale v kotorom kolebaniya s period

4 )*x - 3...

zamenite slovosochetanie talantlivyh uchitelej postroennoe na osnove svyazi soglas

rebro kuba uvelichili v 9 razchemu ravno otnoshenie ploshadi bokovoj poverhnosti bo

diagonali ac i bd yavlyayutsya bissektrisami unlov bad i abc sootvetstvennougol cbd

summa dvuh uglov ravnobedrennoj trapecii ravna 114 gradusovskolko gradusov sos

v ravnobedrennom treugolnike abc ugol b raven 80 gradusam ac osnovanienajd

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