e1 |
e2 |
e1 |
e2 |
e1 |
e2 |
e1 |
e2 |
e1 |
e2 |
e1 |
e2 |
|
|
2+2cosθ |
2-2cosθ |
4cos2
|
4sin2
|
θ |
2 |
θ |
2 |
θ |
2 |
π |
2 |
θ |
2 |
θ |
2 |
θ |
2 |
θ |
2 |
2 |
θ |
2 |
π |
4 |
θ |
2 |
π |
4 |
π |
4 |
3π |
4 |
θ |
2 |
π |
4 |
| ||
2 |
2 |
θ |
2 |
π |
4 |
2 |
2 |
PA |
PB |
PA |
PB |
AB |
PC |
PA |
PB |
PC |
AB |
AC |
BC |
A.[3,13] | B.(3,8) | C.[3,8] | D.(3,13) |
an |
nπ |
6 |
nπ |
6 |
b |
3 |
a1 |
b |
a2 |
b |
a10 |
b |
AB |
A.
| B.0 | C.
| D.-
|
a |
a |
b |
b |
© 2017-2019 超级试练试题库,All Rights Reserved.