sin0°急……sin0° sin90° sin180° sin270° sin360° cos0° cos90° cos180°cos270° cos360° tan0° tan90° tan180° tan270° tan360°各为多少?
问题描述:
sin0°急……
sin0° sin90° sin180° sin270° sin360° cos0° cos90° cos180°cos270° cos360° tan0° tan90° tan180° tan270° tan360°各为多少?
答