TS EAMCET · Maths · Functions
The period of \(\cos (3 x+5)+7\) is
- A \(\frac{2 \pi}{5}\)
- B \(\frac{2 \pi}{3}\)
- C \(\frac{2 \pi}{15}\)
- D \(\frac{2 \pi}{7}\)
Answer & Solution
Correct Answer
(B) \(\frac{2 \pi}{3}\)
Step-by-step Solution
Detailed explanation
Given, \(\cos (3 x+5)+7\) \(\therefore \quad\) Period \(=\frac{2 \pi}{|3|}\{\because\) Period of \(\cos (a x+b)+c\) \(\left.=\frac{2 \pi}{|a|}\right\}\) Period \(=\frac{2 \pi}{3}\)
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