Предмет: Геометрия, автор: vlad229

Помогите решить задачу
дано: ABCA1B1C1- правильная треугольная призма, A1M=MB1, sin 1=1/3 найдите tg2

Приложения:

Ответы

Автор ответа: ужнеужели

1

Ответ: tg2= $\sqrt{\frac{2}{7} }$

Объяснение: Прошу прощения, но набирать такой текст на компе - это пытка.

Надо добавить, может не очевидно.

Если мы проведем отрезок СА1, то получим равнобедренный треугольник (диагонали равных граней равны) А1СВ1. Тогда медиана СМ будет и высотой. То есть треугольник СМВ1 прямоугольный с прямым углом СМВ1

Приложения:

ужнеужели: Добавил текст

vlad229: Спасибо за помощь

ужнеужели: Удачи!

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Three
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