1-sin2θ |
1+cos2θ |
1 |
2 |
1-sin2θ |
1+cos2θ |
sin2θ+cos2θ-2sinθcosθ |
1+2cos2θ-1 |
sin2θ+cos2θ-2sinθcosθ |
2cos2θ |
tan2θ+1-2tanθ |
2 |
4+1-2×2 |
2 |
1 |
2 |
1 |
2 |
1-cos2α |
2 |
1-cos2β |
2 |
1+cos2α |
2 |
1+cos2β |
2 |
1 |
2 |
1 |
4 |
1 |
2 |
1 |
4 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
π |
4 |
cos100° | ||
cos5°•
|
sinα+2cosα |
cosα-sinα |
π |
2 |
3 |
5 |
x |
2 |
x |
2 |
x |
2 |
x |
2 |
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