Вопрос школьника по предмету Геометрия
Один из углов треугольника равен 100 градусов Высота и бисектриса проведённые из вершины этого угла , образуют угол , равный 20 градусов . Найдите неизвестные углы треугольника .
Ответ учителя по предмету Геометрия
∠АВМ=∠СВМ=100/2=50°.
∠АВН=∠АВМ-∠HBM=50-20=30°.
∠BAH=90-∠ABH=90-30=60°.
∠AСВ=180-∠ВАС-∠АВС=180-100-60=20°.
Ответ: 6
0°
и 20°
.
Похожие вопросы от пользователей
1 My friend asked me: «Is it true that your grandfather fought in the World War II?»
2 He asked me: «Do you know the world brave»?
3 My American friend said: «I like Astana very much. I was there a year ago».
4 The teacher said: «Alaska is the largest state of the USA».
5 Dail said to Ann: «I am going to Berlin».
6 The teacher said: «London is the capital of Great Britain».
7 «I shall finish my walk at 5 o`clock», the teacher said.
8 «Where are you from?» he asked me.
9 «What can you say about your English lesson?» my friend asked me.
10 «I shall have a walk if it doesn`t rain today?», his sister said.
11 «If I had enough money I would buy this bicycle,» he said.
12 «If only I had time I would do the work myself’, she said.