TS EAMCET · Maths · Trigonometric Equations
\(\left\{x \in R: \cos 2 x+2 \cos ^2 x=2\right\}\) is equal to
- A \(\left\{2 n \pi+\frac{\pi}{3}: n \in Z\right\}\)
- B \(\left\{n \pi \pm \frac{\pi}{6}: n \in Z\right\}\)
- C \(\left\{n \pi+\frac{\pi}{3}: n \in Z\right\}\)
- D \(\left\{2 n \pi-\frac{\pi}{3}: n \in Z\right\}\)
Answer & Solution
Correct Answer
(B) \(\left\{n \pi \pm \frac{\pi}{6}: n \in Z\right\}\)
Step-by-step Solution
Detailed explanation
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