AP EAMCET · Maths · Trigonometric Equations
If \(\cos \theta-\sin \theta=\sqrt{5} \sin \theta\), then \(\cos \theta+4 \sin \theta=\)
- A \(5 \cos \theta\)
- B \(\sqrt{5} \sin \theta\)
- C \(5 \sin \theta\)
- D \(\sqrt{5} \cos \theta\)
Answer & Solution
Correct Answer
(D) \(\sqrt{5} \cos \theta\)
Step-by-step Solution
Detailed explanation
\(\cos \theta-\sin \theta=\sqrt{5} \sin \theta\)…
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