sin1°+sin2°+sin3°+···+sin88°+sin89°+sin90°的值为多少?最好是写在纸上发过来

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 12:32:09
sin1°+sin2°+sin3°+···+sin88°+sin89°+sin90°的值为多少?最好是写在纸上发过来

sin1°+sin2°+sin3°+···+sin88°+sin89°+sin90°的值为多少?最好是写在纸上发过来
sin1°+sin2°+sin3°+···+sin88°+sin89°+sin90°的值为多少?最好是写在纸上发过来

sin1°+sin2°+sin3°+···+sin88°+sin89°+sin90°的值为多少?最好是写在纸上发过来

sin1°=cos89°,(sina)^2+(cosa)^2=1,
44+1/2+1=45.5