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Wiki Exercise 8. Exchange the bold typed words by pronouns.e.g: Pete lives here. I saw Pete yesterday. He lives here. I saw him yesterda1. Alice is my girlfriend. I love Alice.2. Jane and I saw Mark but Mark did not see Jane and me.3. I told Steve and Carol to come to me.4. My parents liked the cat and I bought the cat.5. Why are the books on the table? Put the books on the shelf.6. It is a nice bird. Listen how lovely the bird is singing.7. Your friend and you are late again.8. My sister and I are great friends.9. I haven't seen Pete and Alex today.10. Steve and Mark have invited my friend and me to the cinema.​

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alexandrxzx09

sin=прот.ст./гипот

sinA=BC/AB=4/5=0,8

sinB=AC/AB=3/5=0,6

cos=прил.ст./гипот.

соsA=AC/AB=3/5=0,6

cosB=BC/AB=4/5=0,8

tg=прот.ст./прил.ст.

tgA=BC/AC=4/3=1 1/3

tgB=AC/BC=3/4=0,75

ctg=прил.ст./прот.ст.

ctgA=AC/BC=0,75

ctgB=1 1/3

Смотря как ты начертишь треугольник. Если ОМ будет лежать против угла в 30 градусов, то значит равна половине гипотенузы, 24/2=12

А если это другой из катетов, то находишь по теореме Пифагора

cos=прил.сторон./гипот.

sin=прот./гип.

один из катетов, который будет лежать против 30°, равен половине гипотенузы, 12/2=6, а другой по теореме Пифагора

а) 12²-6²=144-36=108

б) если треугольник прямоугольный и один из углов равен 45°, то значит он равнобедренный, 180°-(90°+45°)=45°

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Wiki Exercise 8. Exchange the bold typed words by pronouns.e.g: Pete lives here. I saw Pete yesterday. He lives here. I saw him yesterda1. Alice is my girlfriend. I love Alice.2. Jane and I saw Mark but Mark did not see Jane and me.3. I told Steve and Carol to come to me.4. My parents liked the cat and I bought the cat.5. Why are the books on the table? Put the books on the shelf.6. It is a nice bird. Listen how lovely the bird is singing.7. Your friend and you are late again.8. My sister and I are great friends.9. I haven't seen Pete and Alex today.10. Steve and Mark have invited my friend and me to the cinema.​
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