Cho tam giác ABC . Gọi I là giao điểm hai đường phân giác BD và CE . ( D ∈ AC , E ∈ AB ) a) CHứng minh $\widehat{BIC}$ = $90^{0}$ + $\widehat{A}$ b) Cho $\widehat{BAC}$ = $60^{0}$ . Tính $\widehat{BIE}$ c) Biết $\widehat{BAC}$ = $\frac{\widehat{ABC}+\widehat{ACB}}{2}$ . Tính $\widehat{BIC}$

Giúp mình câu c, d với, mình cảm ơn

giúp mk với ạ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Number the details from 1 to 12 to retell the story. This is the story: This happened four years ago when I was still in high school I was told to do my last delivery of my shift I got in my car which was a 1999 Camry perfect for delivering pizzas a GPS the address of my phone I live upstate in the country so all pizza deliveries were long drives I remember the Sun was starting to set so it was probably around seven o'clock I'd say after a good 15 minutes of driving through the forest he dirt roads my GPS said I had arrived it was an old little cottage like house made almost entirely of wood it was sitting all by itself in the middle of absolutely nothing but forest the lawn was completely unkept as the grass was almost at knee height I was used to this kind of thing so I didn't think much of it I took the pizza to the front door there was no door though so I knocked loudly on a door within 10 seconds I heard the son of footsteps hitting wood on the inside of the house the footsteps made it to the door and stopped I started to feel uneasy I got the feeling that I was being watched and that's when I noticed those a peephole on the door it's the pizza guy I called out I heard a low harsh sounding voice on the other side of the door telling me to bring the pizza out back I didn't like the idea of going back there if something didn't seem right are you sure sir I called out he didn't answer my question the sound of footsteps didn't move away from the door so I had the feeling he was still watching me I almost found myself walking back to my car but I decided I didn't want any trouble with my boss the last time I brought a pizza back he gave me attitude so I reluctantly walked through the uncut .Grist and here on the small house to the back I remember those a shed and a little patio back there in the patio there was a table with four chairs surrounding it in one of the chairs facing away from me I saw the head of somebody sitting in the seat I began walking over and said excuse me but the person didn't even move an inch excuse me I said again louder then from behind me I heard over here I turned around to see a man poking his head out from the corner of the house looking at me with a crazed smile come over here I want to show you something I freaked out turned around and ran around the house in the opposite direction back to my car for some reason still holding the pizza I got in my car started it and got away from there on my way back to the pizzeria I pulled over to the side of the road and called the police eventually I was informed that there was no sign of anybody having been in that house for a long time I quit my delivery job a few days after that I have no idea what would have happened to me had I gone up to that man but to this day I still wish I just turned my head to see who or what we're sitting in that patio chair.

Giúp hộ em với, em đang cần gấp ạ, em cảm ơn

Một hình chữ nhật có chu vi là 41/10m ,chiều dài hơn chiều rộnglaf 9/20m,tính S của hình chữ nhật đó

Anh/Chị hãy viết một đoạn văn (khoảng 150 chữ) trả lời câu hỏi: Con người cần phả làm gì để được là chính mình?

Giup em với ạ $\sqrt{cot^{2}x-cos^2x}$ + $\sqrt{tan^2x-sin^2x}$=($\frac{1}{sinx}$ + $\frac{1}{cosx}$)(1-sinxcosx) (0<x< $\frac{\pi}{2}$)

Vẽ đậu mầm ăn ớt :> Cay thực sự , kh hề sao chép nhưng kh ngờ rằng câu trl lại trùng khớp với đáp án của trang wed khá , r bị xóa câu trl lun :<

Các quy phạm pháp luật do nhà nước ban hành được bắt nguồn và thực hiện trong