1.若函数f(x)的解析式为f(x)=2tanx-(2sin^2 (x/2) -1)/(sinx/2*cosx/2)
问题描述:
1.若函数f(x)的解析式为f(x)=2tanx-(2sin^2 (x/2) -1)/(sinx/2*cosx/2)
则f(π/12)是
2.已知α为锐角,且sinα=4/5 (1)求sin^2+sin2α/cos^2 α +cos2α的值(答案20)
(2)tan(α-5π/4) (答案1/7)
答
8
20
1/7