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- 1a b c属于(0,π/2)sina+sinc=sinb cosb+cosc=cosa,则b-a=
- 2如图,C在直线BE上,∠ABC与∠ACE的角平分线交于点A1, (1)若∠A=60°,求∠A1的度数; (2)若∠A=m,求∠A1的度数; (3)在(2)的条件下,若再作∠A1BE、∠A;1CE的平分线,交于点A2;再
- 3be able to 和 can 的区别
- 4Who is the best actor do you think What do you think is the best actor 英语语法高手看看哪句语法错误
- 5找规律1,-1/3,1/5,-1/7……2008个数是什么
- 6英语翻译
- 7Tom is in Class One .Jin is in Class Two,they are in ______.
- 8400字作文人类合理生活该是怎么样的?
- 9在□里填数字,在○里填运算符号 68×□=75×□
- 10I believe,————we do the best that we can-within the situation that we are in-the work will