【摘要】 本文利用作者发现总结的+k(k∈z)和原有的-α与α角三角函数关系两组公式,即可替代原来的五组公式才能解决的求任意角三角函数值,并将原来解决该类问题的步骤简化为两步甚至一步,极大地简化了求任意角三角函数值的问题。更多还原

【Abstract】 This article introduces a method making use of two groups of formulas,+k(k∈z) discovered by the author and the original trigonometric function relation between-α and α,to solve the free angle trigonometric function.This method change the original method: five groups of formulas are all used to do it.It also simplifies the steps into two,even one step.So the question can be simplified greatly.更多还原