理财经理助理职责:tan π/4 =
来源:百度文库 编辑:高考问答 时间:2024/04/30 14:06:29
1
tan π/4 = sin(π/4) / cos(π/4)
π/4 = 45度,两个直角边等长,所以比值为 1
tan π/4=1
tan π/4=tan45度=1
tan π/4 =
tan(π/4+θ)+tan(π/4-θ)=4,cos2θ=?
tan(π/4+α)-tan(π/4-α)=2tan2α
求证:tan(π/4+α)-tan(π/4-α)=2tan2α
已知α,β≠Kπ/2 且tanα-tanβ=2tanαtanαtanβ
(1)已知tan(π/4+α)=2,求tanα,sin2α+sin^2α+cos2α
tan(70·)=tan(20·)+2tan(40·)+4tan(10·)
已知α,β≠Kπ/2 且tanα-tanβ=2tanαtanαtanβ 求证sin(2α+β)/sinβ=3
若tan(A+B)=2/5,tan(B-pai/4)=1/4,那么tan(A+pai/4)的值是多少.
已知Sin2a=A,Cos2a=B,求tan(π/4+a)