Find the Expression as the Tangent of an Angle $$\frac { \tan 3 x + \tan x } { 1 - \tan 3 x \tan x }$$

question 7

Multiple Choice

Find the expression as the tangent of an angle.​ $$\frac { \tan 3 x + \tan x } { 1 - \tan 3 x \tan x }$$ ​

• A) \(\tan 2 x\)
• B) \(\tan 3 x\)
• C) \(\tan 4 x\)
• D) \(\tan ^ { - 1 } 4 x\)
• E) \(\tan ^ { - 1 } 2 x\)

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