tan(A+B)-tanA |
1+tan(A+B)•tanA |
2tanA-tanA |
1+2tanA2 |
tanA |
1+2tan2A |
1 | ||
|
1 |
tanA |
2 |
1 |
tanA |
| ||
2 |
| ||
4 |
| ||
4 |
| ||
4 |
π |
4 |
| ||
10 |
π |
2 |
π |
4 |
π |
2 |
3π |
2 |
AC |
BC |
AC |
BC |
2cos2α+sin2α |
1+cotα |
tan51°+tan9° |
1-tan51°•tan9° |
A.tan42° | B.
| C.
| D.-
|
π |
12 |
π |
12 |
2tan150° |
1-tan2150° |
1 |
sin10° |
| ||
cos10° |
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