Answer:
x = ±π/6 +kπ . . . for any integer k
Step-by-step explanation:
Solving for x, we have ...
1 = 3tan(x)² . . . . . add 3tan(x)²
±√(1/3) = tan(x) . . . divide by 3, take the square root
x = arctan(±√(1/3)) +kπ . . . . use the inverse function to find x
x = ±π/6 +kπ