tanA=0.56
问题描述:
tanA=0.56
求角A?
答
arctanx=x-1/3*x^3+1/5*x^5-1/7*x^7+1/9*x^9...
arctan0.56=0.56-1/3*0.56^3+1/5*0.56^5-1/7*0.56^7=0.51
化成角度约为
29.2213度
若要提高精度可继续算