題目列表(包括答案和解析)
3 |
1 |
6 |
sin (180°-α)•sin(270°-α)•tan(90°-α) |
sin(90°+α)•tan(270°+α)•tan(360°-α) |
4sinα+2cosα |
5cosα+3sinα |
sin(180°-α)•sin(270°-α)•tan(90°-α) |
sin(90°+α)•tan(270°+α)•tan(360°-α) |
1 |
3 |
1 |
8 |
5 |
2 |
sin(180°-α)sin(270°-α)tan(180°-α) |
sin(90°+α)tan(180°+α)tan(360°-α) |
(09年長沙一中第八次月考文)sin (270°) = ( )
A.1 B.0 C.1 D.1 |
3 |
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