4cos4x-2cos2x-1 | ||||
sin(
|
11π |
12 |
π |
4 |
1 |
2 |
1+cos2x |
2 |
1+cos4x |
2 |
π |
4 |
π |
4 |
(1+cos2x)2-2cos2x-1 | ||||
sin(
|
cos22x | ||||
sin(
|
2cos22x | ||
sin(
|
2cos22x |
cos2x |
11π |
12 |
11π |
6 |
π |
6 |
3 |
2 |
π |
4 |
|
π |
4 |
π |
4 |
3π |
4 |
π |
8 |
2 |
1 |
2 |
2 |
. |
| . |
2 |
AB |
BC |
AB2 |
sin2θ+sinθ |
2cos2θ+2sin2θ+cosθ |
A.tanθ | B.tan2θ | C.cotθ | D.cot2θ |
| ||
3 |
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