问题
填空题
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答案
=1-sin200 cos3500- 1-cos21700
=cos10°-sin10° cos10°-sin170°
=1,cos10°-sin10° cos10°-sin10°
故答案为 1.
|
=1-sin200 cos3500- 1-cos21700
=cos10°-sin10° cos10°-sin170°
=1,cos10°-sin10° cos10°-sin10°
故答案为 1.