AP EAMCET · Maths · Trigonometric Ratios & Identities
\([1+\sec 2 \theta][1+\sec 4 \theta]=\)
- A \(\tan \theta \tan 4 \theta\)
- B \(\cot \theta \tan 4 \theta\)
- C \(4 \cot \theta \tan 4 \theta\)
- D \(4 \tan \theta \tan 4 \theta\)
Answer & Solution
Correct Answer
(C) \(4 \cot \theta \tan 4 \theta\)
Step-by-step Solution
Detailed explanation
\([1+\sec 2 \theta][1+\sec 4 \theta]=\left[1+\frac{1}{\cos 2 \theta}\right] \cdot\left[1+\frac{1}{\cos 4 \theta}\right]\)…
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