Предмет: Геометрия, автор: qqqq75

Существует ли угол, косинус которого равен корень из 3?

parus77: такого угла не существует.|cosx|<=1.

Ответы

Автор ответа: MrFlyguy

2

Ответ:

нет

Объяснение:

такого угла не существует, так как косинус - это отношение катета к гипотенузе, а если бы оно было бы √3(что больше нуля), то получится, что катет больше гипотенузы, что невозможно.

NNNLLL54: cos60=0,5>0 существует ! важно, чтобы cosa не превышал 1 !

MrFlyguy: Ой, точно, вместо единицы написал ноль, спасибо за исправление!

Автор ответа: NNNLLL54

2

Ответ: не существует угла , косинус которого был бы равен √3 .

$|cosx|\leq 1\ \ \ \Rightarrow \ \ \ -1\leq cosx\leq 1$

$\sqrt3\approx 1,7>1\ \ \ \Rightarrow \ \ \ \boxed{\ cosx\ne \sqrt3\ }$

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