В треугольнике ABC, угол C=90градусов, sinA=0,27 найти cоsB?

английский язык 11 класс

2 Circle the correct answer.

1 Ever since John met Sally, he’s been rain or shine / on cloud nine. I think he’s in love.

2 He didn’t expect to get the sack. It really was a bolt from the blue / bolt of thunder.

3 Don’t make a big deal out of it. It’s just a storm in a teacup / storm in a teaspoon.

4 I don’t think I’ll play today. I’m a bit under the weather / under the thunder.

5 He had a face like weather / like thunder when I told him I forgot to bring the tennis racket.

6 Come clouds or shine / rain or shine I will finish this project today!

3 Complete the sentences with the correct word. The first letter has been provided. 1 This is the worst b____________ that has hit Alaska in years. I can’t even see my car from all the snow. 2 It is so hot! Meteorologists say that this h____________ will last for another five days. 3 The h____________ was so powerful. There was so much rain and winds were travelling at 150 kilometres per hour! 4 Farmers are worried that if it doesn’t rain, the d____________ will destroy their crops. 5 The t____________ destroyed five houses in our town. It actually lifted our car and dropped it 500 metres from where it was parked! 6 The f____________ really made life difficult for everyone. There was water everywhere!

6 Choose the correct answer.

1 You don’t have to / can’t make dinner tonight. We can always order.

2 If we are not careful, many animals may / are able to become extinct.

3 You mustn’t / can’t go in the jungle without a guide, it’s dangerous.

4 I think you should / have to walk more rather than use your car every time you leave the house.

5 A giraffe should / can reach a height of 5.5 metres tall.

6 We might / can leave town if the tornado comes near.