Question

Question 1 (Multiple Choice Worth 3 points)

Find all solutions in the interval [0, 2π).

7 tan3x - 21 tan x = 0

pi divided by three, two pi divided by three, four pi divided by three, five pi divided by three
0, pi divided by five, π, six pi divided by five
0, pi divided by three, two pi divided by three, π, four pi divided by three, five pi divided by three
0, pi divided by three, π, four pi divided by three