Solve \(\tan (x)+\sec (x)=\sqrt{3}, x \in[0,2 \pi]\)

Solve \(\tan (x)+\sec (x)=\sqrt{3}, x \in[0,2 \pi]\)
  1. \(\frac{\pi}{3}\)
  2. \(\frac{\pi}{6}\)
  3. \(\frac{13 \pi}{6}\)
  4. \(\frac{6 \pi}{13}\)

Solution

Given trigonometric equation is \(\begin{aligned} & \tan x+\sec x=\sqrt{3}, x \in[0,2 \pi] \\ & \therefore \quad \sec x-\tan x=\frac{1}{\sqrt{3}} \end{aligned}\) So, \(2 \tan x=\sqrt{3}-\frac{1}{\sqrt{3}}\) \(\Rightarrow 2 \tan x=\frac{2}{\sqrt{3}} \Rightarrow \tan x=\frac{1}{\sqrt{3}} \Rightarrow x=\frac{\pi}{6}\) or \(\frac{7 \pi}{6}\) Hence, option (b) is correct.

Asked in: AP EAMCET 2020 (21 Sep Shift 2)

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