Дополнить на английском 1)At the assembly hall students attend the official ceremonies like- 2)A survival complex at the academy is an important class where cadets- 3)the gym is not only for- 4)go to the canteen- 5)The eng language department is- 6) the deans-

Сначала формулы . затем формулы двойного угла sin2α=2sinαcosα cos2α=cos²α-sin²α=cos²α-(1-cos²α)=2cos²α-1⇒  2cos²α=1+cos2α cos2α=cos²α-sin²α=1-sin²α-sin²α=1-2sin²α⇒  2sin²α=1-cos2α а) сos75°cos105°=cos(90°-15°)·cos(90°+15°)== sin15°(-sin15°)=-sin²15°=-(1-cos30°)/2=(cos30°-1)/2= ((√3/2)-1)/2=0,25√3-0,5б) sin75°sin15°=°sin(90°-15°)sin15°=cos15° sin15°=sin30°/2=1/4=0,25в) sin105°cos15°=sin(180°-75°)cos15°=sin75°cos15°=sin(90°-15°)cos15°=cos15°cos15°=(1+cos30°)/2=(1+(√3/2))/2=0,5 +0,25√3 2 способ формулы cosα·cosβ=0,5cos(α-β)+0,5cos(α+β) sinα·sinβ=0,5cos(α-β)-0,5cos(α+β) sinα·cosβ=0,5sin(α+β)+0,5sin(α-β) а) сos75°cos105°=0,5cos(75°-105°)+0,5cos(75°+105°)=0,5cos(-30°)+0,5 cos180°==0,5· √3/2+0,5·(-1)=0,25√3-0,5б) sin75°sin15°=0,5cos(75°-15°)-0,5cos(75°+15° )=0,5cos60°-0,5 cos90°=0,5·0,5=0,25в) sin105°cos15°=0,5sin(105°+15°)+0,5sin(105°-15°)= =0,5sin120°+0,5sin90°==0,5 sin(180°-60°)+0,5·1=0,5 sin 60°+0,5=0,25√3+0,5

Many people believe that distance learning is far more exciting than going to school. However, many others think that studying at school is better than studying online.

From my point of view, distance learning is more beneficial. Firstly, it is more convenient – you do not need to wear uncomfortable uniform, you can eat whatever and whenever you want and you can take a break anytime. In addition, there is no need in direct contact with your teachers or classmates, so you can stay in comfort, relax and concentrate better.

Nonetheless, many others insist that homeschooling is worse than school learning. Their argument is that attending school is the main way for a teenager to socialize. Also, they consider that when you study at home it is harder to concentrate and stay productive.

I do not fully agree with my opponents. There are many ways for children and teenagers to socialize. For example, it could be some special courses or clubs like art schools or dancing classes. Hobbies are also good for socializing because you can meet people who share your interests. Furthermore, nowadays you can use many apps which can help you to be as concentrated and productive as possible.

But it’s still up to you to decide whether you should go to school or study at home. For some people it is better to take online classes, while others prefer studying at school. As for me, I choose distance learning because it is more comfortable for me and I have enough time to study and entertain.