sin[(k+1)π+θ]•cos[(k+1)π-θ] |
sin(kπ-θ)•cos(kπ+θ) |
sin(2nπ+π+θ)•cos(2nπ+π-θ) |
sin(2nπ-θ)•cos(2nπ+θ) |
-sinθ•(-cosθ) |
-sinθ•cosθ |
sin[(2n+2)π+θ]•cos[(2n+2)π-θ] |
sin(2nπ+π-θ)•cos(2nπ+π+θ) |
sinθ•cosθ |
sinθ•(-cosθ) |
16π |
3 |
A.
| B.-
| C.
| D.-
|
A.a<b<c | B.b<a<c | C.c<b<a | D.c<a<b |
π |
2 |
1 | ||
|
A.-
| B.-
| C.
| D.
|
3 |
A.
| B.
| C.
| D.
|
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