高中数学必修4习题3.1 13题答案
高中数学必修4习题3.1 13题答案
数学人气:736 ℃时间:2019-12-09 15:19:16
优质解答
1.6倍根号5sin(x+30`) 2.根号3cos(x+30) 3.2sin(2分之x+30) 4.2分之根号2cos(x-12分之π) 5.2分之根号2 6.2分之1 7.sin(a+r) 8.-cos(a-r) 9.-根号3 10.tan(b-a)
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