π |
2 |
3π |
2 |
AC |
BC |
AC |
BC |
2cos2α+sin2α |
1+cotα |
AC |
BC |
AC |
BC |
(cosα-3)2+sin2α |
cos2α+(sinα-3)2 |
π |
2 |
3π |
2 |
5π |
4 |
AC |
BC |
π |
2 |
3π |
2 |
5π |
4 |
2cos2α+sin2α |
1+cotα |
2cos2α+2sinαcosα | ||
1+
|
2cosα(cosα+sinα) | ||
|
AC |
BC |
2 |
3 |
4 |
9 |
5 |
9 |
2cos2α+sin2α |
1+cotα |
5 |
9 |
tan51°+tan9° |
1-tan51°•tan9° |
A.tan42° | B.
| C.
| D.-
|
π |
12 |
π |
12 |
2tan150° |
1-tan2150° |
1 |
sin10° |
| ||
cos10° |
2 |
3 |
x |
2 |
| ||
sin170°-
|
cotα-cosα |
cotαcosα |
cotαcosα |
cotα+cosα |
1 |
tanα |
m |
n |
m |
n |
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