题目内容
化简:sin2(x+
)+sin2(x-
)=______.
| π |
| 3 |
| π |
| 6 |
sin2(x+
)+sin2(x-
)=sin2(x+
)+sin2[
+(x-
)]=sin2(x+
)+cos2(x+
)=1.
故答案为:1
| π |
| 3 |
| π |
| 6 |
| π |
| 3 |
| π |
| 2 |
| π |
| 6 |
| π |
| 3 |
| π |
| 3 |
故答案为:1
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题目内容
| π |
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| π |
| 3 |
| π |
| 6 |
| π |
| 3 |
| π |
| 2 |
| π |
| 6 |
| π |
| 3 |
| π |
| 3 |