m |
n |
m |
n |
π |
6 |
π |
6 |
π |
3 |
π |
6 |
| ||
2 |
3 |
4 |
3 |
3 |
| ||
2 |
1 |
2 |
π |
6 |
π |
6 |
π |
2 |
π |
6 |
π |
6 |
π |
2 |
π |
6 |
π |
2 |
π |
3 |
π |
6 |
π |
3 |
π |
6 |
A.直角△ | B.等腰△ | C.等边△ | D.锐角△ |
1 |
3 |
1 |
2sinαcosα+cos2α |
tan(π-α)cos(2π-α)sin(-α+
| ||
cos(-α-π)sin(-π-α) |
| ||
2 |
1 |
2 |
3 |
A.直角三角形 | B.锐角三角形 |
C.等边三角形 | D.等腰直角三角形 |
3 |
x |
2 |
x |
2 |
x |
2 |
x |
2 |
© 2017-2019 超级试练试题库,All Rights Reserved.