问题描述: arctan(1/3)+arctan(1/2)的值为? 1个回答 分类:数学 2014-12-10 问题解答: 我来补答 tan(arctan(1/3)+arctan(1/2))=(tanarctan(1/3)+tanarctan(1/2))/(1-tanarctan(1/3)*tanarctan(1/2))=(1/3+1/2)/(1-1/3*1/2)=(5/6) /(5/6)=1所以arctan(1/3)+arctan(1/2)=pai/4 展开全文阅读