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