arctan(-2)+arctan(-3)=?
arctan(-2)+arctan(-3)=?
arctan(A/2)+arctan(A/5)=30
arctan(1/3)+arctan(1/2)的值为?
求证:arctan 1/2+arctan 1/5+arctan 1/8=π/4
tan(arctan x + arctan p)=?
-arctan(-x)=-pai+arctan么?
tan(arcsin1/2-arctan根号3)= 3Q
y=arctan(2+3^x)求反函数
y=arctan(x^2+1)
求arctan1/3+arctan(-2)的值
arctan1/3+arctan(-2)的值为
求值:sin[1/2arctan(-4/3)]