1 |
4 |
cos2α |
sin2α |
A.2 | B.-3 | C.4 | D.6 |
1 |
4 |
cos2α |
sin2α |
cos2α |
2sinαcosα |
cosα |
2sinα |
1 |
2tanα |
1 | ||
2×
|
a2 |
x |
b2 |
y |
(a+b)2 |
x+y |
a |
x |
b |
y |
1 |
3-tan2x |
9 |
8+sec2x |
1 |
2 |
(cosa-sina)2 |
cos2a |
1 |
2 |
| ||
2 |
2tan130 |
1+tan2130 |
|
π |
2 |
π |
6 |
A.0 | B.
| C.1 | D.
|
5 |
13 |
| ||
4 |
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