trigonometry

Question: If $\cos \theta +\sec \theta =\frac{5}{2}$, then the general value of $\theta $is

1) $n\pi \pm \frac{\pi }{3}$

2) $2n\pi \pm \frac{\pi }{6}$

3) $n\pi \pm \frac{\pi }{6}$

4) $2n\pi \pm \frac{\pi }{3}$

Solution:

Explanation: No Explanation

Solution of trigonometric equations

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