Предмет: Геометрия, автор: Юлька377

Дан прямоугольный треугольник ABC, угол C=90 градусов, AB=15см, AC=9см. Найдите синус A

Ответы

Автор ответа: mimimi23
0

1) по теореме Пифогора: CB^2=AB^2-AC^2=225-81=144, CB=12см

2) sinA=CB:AB=12/15=4/5.

ответ: 4/5

 

 

 

 

 

 

Автор ответа: dmaxim4ik
0

ВС=корень (225-81)=12 по теореме Пифагора

sin=ВС/АВ=12/15=4/5=0,8

 

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1. A p _ _ _ _ _ _ (adjective) thing, place or activity is one that many people like.

2. A c _ _ _ _ (noun) is an area marked with lines where some sports (e.g. basketball, tennis) are played

3. _ t _ _ (noun): someone very famous and popular (e.g. an actor or sports player)

4. An _ _ _ _ _ _ ce (noun) is a group of people who watch or listen to something (e.g. a film or a show)

5. b _ _ _ _ _ (verb): to hit the surface of something and then move away (e.g. a ball moving through the air, hitting the ground, then moving through the air again)

6. _ _ _ m (noun): a group of people who play a sport or a game against another group

7. _ _ _ _ l (noun): a small flat piece of metal, often circular, that you might get for winning a competition

8. _ _ d _ _ _ s (adverb): inside a building (e.g. a house)1. A p _ _ _ _ _ _ (adjective) thing, place or activity is one that many people like.

2. A c _ _ _ _ (noun) is an area marked with lines where some sports (e.g. basketball, tennis) are played

3. _ t _ _ (noun): someone very famous and popular (e.g. an actor or sports player)

4. An _ _ _ _ _ _ ce (noun) is a group of people who watch or listen to something (e.g. a film or a show)

5. b _ _ _ _ _ (verb): to hit the surface of something and then move away (e.g. a ball moving through the air, hitting the ground, then moving through the air again)

6. _ _ _ m (noun): a group of people who play a sport or a game against another group

7. _ _ _ _ l (noun): a small flat piece of metal, often circular, that you might get for winning a competition

8. _ _ d _ _ _ s (adverb): inside a building (e.g. a house)