| 13π | π | π | π | |||||
tg( | =tg( | + | )=−ctg( | ) | ||||
| 24 | 2 | 24 | 24 |
| cos(7.5o) | ||
ctg(7.5o)= | ||
| sin(7.5o) |
| cos(7.5o) | 2cos(7.5o) | ||
* | = | ||
| sin(7.5o) | 2cos(7.5o |
| 2cos2(7.5) | 1+cos(15o) | |||
= | = | |||
| 2 sin7.5*cos(7.5) | sin(15o) |
| 5^2 | 52 |
| 2^{10} | 210 |
| a_2 | a2 |
| a_{25} | a25 |
| p{2} | √2 |
| p{81} | √81 |
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