2arcsin (√2/2) = arcsin ((x−2)/2)
| √2 | π | |||
arcsin( | ) = | |||
| 2 | 4 |
| π | x−2 | |||
2* | = arcsin( | ) | ||
| 4 | 2 |
| π | x−2 | ||
= arcsin( | ) | ||
| 2 | 2 |
| x−2 | |
= 1 | |
| 2 |
| √x | x−2 | |||
2arcsin( | ) = arcsin( | ) / sin | ||
| 2 | 2 |
| √x | x − 2 | |||
sin(2arcsin( | )) = | |||
| 2 | 2 |
| √x | √x | x − 2 | ||||
2sin(arcsin( | ))cos(arcsin( | )) = | ||||
| 2 | 2 | 2 |
| √x | π | √x | x − 2 | |||||
2* | cos( | − arccos( | )) = | |||||
| 2 | 2 | 2 | 2 |