1-2sinxcosx |
cos2x-sin2x |
1-tanx |
1+tanx |
1-2sinxcosx |
cos2x-sin2x |
cos2x+sin2x-2sinxcosx |
cos2x-sin2x |
(cosx-sinx)2 |
(cosx-sinx)×(cosx+sinx) |
cosx-sinx |
cosx+sinx |
1-tanx |
1+tanx |
1-2sinxcosx |
cos2x-sin2x |
1-tanx |
1+tanx |
A.
| B.
| C.
| D.
|
A.[-1,1] | B.[-2,2] | C.[0,
| D.[-
|
A.
| B.-
| C.
| D.-
|
| ||
b2+c2-a2 |
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