Предмет: Геометрия, автор: helpheelpme

13ую :( очень прошу! Оценка зависит(

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Автор ответа: Матов

0

sinA=V7/4

SinB=?

C=90 треугольник прямоугольный тогда

sinA= BC/AB

BC/AB=V7/4

BC=V7

AB=4

sinB= AC/AB

AC=VAB^2-BC^2= V16- 7=V9=3

sinB=3/4

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