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计算：sin65°+sin15°sin10°sin25°-cos15°cos80°的值为．
题目详情
计算：
|
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
▼优质解答
答案和解析
=
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
=
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
=
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
=
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
sin65°+sin15°sin10° sin25°-cos15°cos80° sin65°+sin15°sin10° sin65°+sin15°sin10° sin65°+sin15°sin10° sin25°-cos15°cos80° sin25°-cos15°cos80° sin25°-cos15°cos80°
=
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
sin65°-
(cos25°-cos5° ) sin25°-
(cos95°+cos65° ) sin65°-
(cos25°-cos5° ) sin65°-
(cos25°-cos5° ) sin65°-
1 2 1 1 1 2 2 2 (cos25°-cos5° ) sin25°-
(cos95°+cos65° ) sin25°-
(cos95°+cos65° ) sin25°-
1 2 1 1 1 2 2 2 (cos95°+cos65° )
=
=
=
=cot15°
=tan75°=2+
故答案为：2+
sin65°+
cos5°
sin25°-
cos95°
sin65°+
cos5°
sin65°+
cos5°
1 2 1 1 1 2 2 2 sin65°+
1 2 1 1 1 2 2 2 cos5°
sin25°-
cos95°
sin25°-
cos95°
1 2 1 1 1 2 2 2 sin25°-
1 2 1 1 1 2 2 2 cos95°
=
=
=cot15°
=tan75°=2+
故答案为：2+
cos25°+cos5° cos65°-cos95° cos25°+cos5° cos25°+cos5° cos25°+cos5° cos65°-cos95° cos65°-cos95° cos65°-cos95°
=
=cot15°
=tan75°=2+
故答案为：2+
2cos15°cos10° 2sin80°sin15° 2cos15°cos10° 2cos15°cos10° 2cos15°cos10° 2sin80°sin15° 2sin80°sin15° 2sin80°sin15°
=cot15°
=tan75°=2+
故答案为：2+
3 3 3 3
故答案为：2+
3 3 3 3
=
=
=
=
=cot15° =tan75°=2+
故答案为：2+
|
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
=
sin65°-
| ||
sin25°-
|
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
=
sin65°-
| ||
sin25°-
|
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
=
sin65°-
| ||
sin25°-
|
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
=
sin65°-
| ||
sin25°-
|
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| sin65°+sin15°sin10° |
| sin25°-cos15°cos80° |
=
sin65°-
| ||
sin25°-
|
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
sin65°-
| ||
sin25°-
|
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| ||||
|
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| ||||
|
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| cos25°+cos5° |
| cos65°-cos95° |
=
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| 2cos15°cos10° |
| 2sin80°sin15° |
=cot15°
=tan75°=2+
| 3 |
故答案为：2+
| 3 |
| 3 |
故答案为：2+
| 3 |
| 3 |
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