题目内容
计算：sin266°-tan54°tan36°+sin224°+sin230°+cos230°+
| tan260° |
| cot260° |
sin266°-tan54°tan36°+sin224°+sin230°+cos230°+
=（sin266°+sin224°）-1+（
）2+（
）2+
=1-1+
+
+9
=10．
| tan260° |
| cot260° |
=（sin266°+sin224°）-1+（
| 1 |
| 2 |
| ||
| 2 |
(
| ||||
(
|
=1-1+
| 1 |
| 4 |
| 3 |
| 4 |
=10．
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