a |
1 |
sinx |
-1 |
sinx |
b |
π |
2 |
a |
b |
π |
3 |
a |
b |
a |
b |
1 |
sinx |
-1 |
sinx |
π |
2 |
a |
b |
a |
b |
2 |
sinx |
-cos2x |
sinx |
2-cos2x |
sinx |
1+2sin2x |
sinx |
1 |
sinx |
π |
3 |
| ||
2 |
1 |
sinx |
2sinx•
|
2 |
1 |
sinx |
| ||
2 |
2 |
AB |
AB |
OA |
A.
| B.-
| C.
| D.-
|
a |
b |
2π |
3 |
a |
b |
a |
b |
A.7 | B.
| C.
| D.3 |
AB |
AC |
AB |
AC |
3 |
2 |
A.60°或120° | B.120° | C.150° | D.30°或150° |
a |
b |
c |
d |
a |
c |
b |
d |
a |
6 |
| ||
2 |
| ||
2 |
TP |
TQ |
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