ctg^2 A + 1= 1/sin^2 A
10/9 = 1/sin^2 A
sin^2 A = 9/10
sin A = √9/√10 = 3/√10
Ответ: 3 /√10
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
ctg^2 A + 1= 1/sin^2 A
10/9 = 1/sin^2 A
sin^2 A = 9/10
sin A = √9/√10 = 3/√10
Ответ: 3 /√10