Ctg150 = - корень из 3
сos120 = - 1/2
произведение равно = (корень из 3) / 2
<span>During the week I always have to get up early for work so on Sunday I love to wake up late, usually around 9am and then get up 30 minutes later.</span><span>The first thing I do is switch on the coffee maker. No instant coffee for me today! On Sundays I always take the time to make some good coffee. While that's getting ready, I quickly throw onsome clothes and pick up a newspaper from the local shop.</span><span>With my coffee and paper, I spend the rest of the morning on the sofa. Sometimes I even turn offmy phone for a couple of hours so no one calls me.</span><span>Later in the day, I like to hang out with friends over lunch and catch up with their news and gossip.
</span><span>
</span><span>All in all, that's my idea of a good day!
ну вот так как то))
</span>
1260=2²*3²+5*7
1980=2*3³*5*11
<span>НОД=2*3²*5=90</span>
Зная формулу суммы кубов можно сразу же представить данные выражения в нужной форме, все на скриншоте:
.......................................................................................................................................................