| 1−sin2x | ||
1) | =1 | |
| 2 |
| π | 3π | |||
2x=− | +2kπ 2x= | +2kπ | ||
| 2 | 2 |
| π | 3π | |||
x=− | +kπ x= | +kπ k∊C | ||
| 4 | 4 |
| π | ||
2) sin(2x− | )=−1 | |
| 3 |
| π | π | π | 3π | |||||
2x− | =− | +2kπ 2x− | = | +2kπ | ||||
| 3 | 2 | 3 | 2 |
| π | 11π | |||
2x=− | +2kπ 2x= | +2kπ | ||
| 6 | 6 |
| π | 11π | |||
x=− | +kπ x= | +kπ k∊C | ||
| 12 | 12 |