b |
a |
A.(-2,2) | B.(0,2) | C.(
| D.(
|
a |
sinA |
b |
sinB |
b |
a |
sinB |
sinA |
sin2A |
sinA |
2sinAcosA |
sinA |
π |
6 |
π |
4 |
| ||
2 |
| ||
2 |
2 |
3 |
π |
4 |
π |
2 |
1-sin2α |
1 |
5 |
tanA |
tanB |
2c-b |
b |
sinα+cosα |
sinα-cosα |
1 |
3 |
cos(π+θ) |
cosθ[cos(π-θ)-1] |
cos(θ-2π) | ||||
sin(θ-
|
4 |
3 |
π |
4 |
© 2017-2019 超级试练试题库,All Rights Reserved.