в треугольнике ABC УГОЛ C РАВЕН 90°,sin A = √21
⁻⁻⁻
НАЙДИТЕ sin B 5
sin B = cos A = sqrt ( 1 - (sinA)^2 ) = sqrt ( 1 - 21/25 ) = 2/5
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
sin B = cos A = sqrt ( 1 - (sinA)^2 ) = sqrt ( 1 - 21/25 ) = 2/5