θ |
2 |
3 |
5 |
θ |
2 |
4 |
5 |
A.7x+24y=0 | B.7x-24y=0 | C.24x+7y=0 | D.24x-7y=0 |
θ |
2 |
3 |
5 |
θ |
2 |
4 |
5 |
θ |
2 |
θ |
2 |
3π |
2 |
7π |
4 |
θ |
2 |
4 |
3 |
2×(-
| ||
1-(-
|
24 |
7 |
3 |
4 |
3 |
4 |
β |
3 |
A.90° | B.180° |
C.270° | D.90°,180°或270° |
x |
2 |
1 |
2x |
A.2kπ,k∈Z | B.(2k+1)π,k∈Z | C.kπ,k∈Z | D.kπ+
|
π |
4 |
π |
4 |
A.α+β=0 | B.α-β=
| C.α+β=2kπ | D.α-β=2kπ-
|
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