Giải thích các bước giải:
`text(Nhìn vào hình ta thấy :)`
`hat(y) = 90^o - 55^o = 35^o`
`Do hat(BAH) + hat(HAC) = 90^o`
`⇒ hat(BAH) = 35^o`
`text(Lại có :)`
`hat(x) + hat(BAH) = 90^o`
`⇒ hat(x) = 55^o`
~ Bạn tham khảo ~
Xét `ΔAHC` có :
`\hat{A_1} + \hat{H_1} + y = 180^o` (Tổng `3` góc `Δ`)
`=> y = 180^o - 90^o - 55^o`
`=> y = 35^o`
Vì `\hat{A_1}+\hat{A_2}=90^o`
`=> \hat{A_2}=90^o-55^o=35^o`
Xét `ΔAHB` có :
`\hat{A_2} + \hat{H_2} + x = 180^o` (Tổng `3` góc `Δ`)
`=> x = 180^o - 90^o - 35^o`
`=> x = 55^o`
Vậy `x=55^o;y=35^o`
cali: nii123 - digi not tradi - tone xanh dương - có trang trí
V. Rearrange the words to make meaningful sentences. 1. Playing/and / the / is / room / the guitar / Ba / in / learning / music / to. 2. dinner / like / come / would / to / house / you / to / for / my? 3. this time tomorrow/ English/ They/ will/ be learning. 4. doesn’t like/ ice-skating/ because/ my brother/ dangerous/ he/ it is/ thinks. 5. people/ until/ flying cars/ use/ won’t/ year 2050.
Combine these sentences using “too + adj + to V” or “adj + enough + to V” 8. The dress is so dirty. She can’t wear it. ........................................................................... 9.The film is very good. The children won’t miss it. ....................................................................................................................................... 10. Those shoes are large. You can wear them. ....................................................................................................................................... 11. He is very strong. He can carry all these things. ............................................................................................
Supply the correct form of the verbs in the brackets. Làm giải thích cho mình nha. 1. She's a good manager because she never avoids...... ( deal) with the problems of her staff. 2. I imagine .......(go) back to the 20th century and ....... (witness) the construction of Cu Chi Tunnels. 3. We recommed........ (book) early , as this is a popular event. 4. Youngters nowadays seem ........(lack) awareness of protecting the public. 5. A lot of small towns in the area are definitely worth.........(visit) 6. E-mail allows us ......( send) messages all aroud the world quickly and easily. 7. On the way to Hue , we stopped.........(pay) a visit to a relative in Da Nang. Giúp mk vs ạ. Mk cảm ơn
giúpppppppppppppppppppppppppppppppppppppppppppppppppppp
giúp vs ạ giúp em với ạ huhu em cần gấp ai giúp em bank 1k mua kẹo nè
|x-5|-|x-2|+|2x+1|= x+2 làm hộ gấp lém
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Các cao nhân giúp em câu c vs d ak
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