Объяснение:
1) tg A = BC/AC = 1/2 = 0,5
2) tg B = AC/BC = 2/1 = 2
3) т.к. ∆ АВС - п/у => АВ^2 = АС^2 + ВС^2 => АВ^2 = 4 + 1 => АВ = √5 дм
4) sin A = BC/AB = 1/√5 = √5/5
5) sin B = AC/AB = 2/√5 => 2√5/5
6) cos A = AC/AB = 2/√5 = 2√5/5
7) cos B = BC/AB = /√5 = √5/5
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Объяснение:
1) tg A = BC/AC = 1/2 = 0,5
2) tg B = AC/BC = 2/1 = 2
3) т.к. ∆ АВС - п/у => АВ^2 = АС^2 + ВС^2 => АВ^2 = 4 + 1 => АВ = √5 дм
4) sin A = BC/AB = 1/√5 = √5/5
5) sin B = AC/AB = 2/√5 => 2√5/5
6) cos A = AC/AB = 2/√5 = 2√5/5
7) cos B = BC/AB = /√5 = √5/5