Find All Solutions in the Interval [0, 2π]
- $7 \tan ^ { 3 } x - 21 \tan x = 0$

question 211

Multiple Choice

Find all solutions in the interval [0, 2π]
- $7 \tan ^ { 3 } x - 21 \tan x = 0$

• A) \(\frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \frac { 4 \pi } { 3 } , \frac { 5 \pi } { 3 }\)
• B) \(0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi , \frac { 4 \pi } { 3 } , \frac { 5 \pi } { 3 }\)
• C) \(0 , \frac { \pi } { 5 } , \pi , \frac { 6 \pi } { 5 }\)
• D) \(0 , \frac { \pi } { 3 } , \pi , \frac { 4 \pi } { 3 }\)

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