Find the general solution of equation tanx=13tanx=\frac{1}{\sqrt3}tanx=31.
Question
Find the general solution of equation tanx=31.
A.
x=nπ+65π
B.
x=nπ+3π
C.
x=nπ+6π
D.
x=nπ+32π
Correct option is C
First, find the principal solution (i.e., the smallest positive angle x that satisfies the equation).We know that:tan(6π)=31Thus, one solution is:x=6πDetermine the General SolutionThe tangent function has a period of π, meaning:tanx=tan(x+nπ)for any integer n.Therefore, the general solution is:x=6π+nπwhere n∈Z (i.e., n=0,±1,±2,…)