π |
4 |
π |
4 |
OP |
OQ |
OP |
OQ |
OP |
OQ |
OP |
OQ |
| ||||
|
|
2cosx |
1+cos2x |
| ||||
|
|
2cosx |
1+cos2x |
2 | ||
cosx+
|
π |
4 |
π |
4 |
| ||
2 |
1 |
x |
| ||
2 |
1 |
x2 |
| ||
2 |
1 |
x |
| ||
2 |
1 |
cosx |
3
| ||
2 |
2
| ||
3 |
2
| ||
3 |
a |
b |
a |
b |
a |
b |
b |
a |
a |
b |
a |
b |
a |
a |
b |
7 |
a |
b |
π |
3 |
b |
a |
b |
c |
a |
b |
c |
a |
b |
c |
a |
b |
a |
b |
a |
b |
a |
b |
AB |
AC |
BC |
AC |
BC |
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