Cos^2 x-2 cos x sin x =0​

Is this information true or false:

1. Australia is the world’s largest island.

2. In the USA the seasons are the other way round.

3. Australia is the smallest continent.

4. Many people live far away from towns in the outback in Australia.

5. Three-quarters (3/4) of the USA are washed by ocean.

6. On the Australia’s coat of arms there are the kangaroo and the emu.

7. In Great Britain people live within four time zones.

8. It is never very hot or very cold in the UK.

помогите,очень надо!.