题目内容
| 8π |
| 5 |
| A．278° | B．280° | C．288° | D．318° |
∵1rad=（
）°，
∴
=
×（
）°=（
）°=288°．
故选：C
| 180 |
| π |
∴
| 8π |
| 5 |
| 8π |
| 5 |
| 180 |
| π |
| 8π×180 |
| 5×π |
故选：C
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题目内容
| 8π |
| 5 |
| A．278° | B．280° | C．288° | D．318° |
| 180 |
| π |
| 8π |
| 5 |
| 8π |
| 5 |
| 180 |
| π |
| 8π×180 |
| 5×π |