TS EAMCET · Maths · Trigonometric Equations
If \(\sin 2 \theta\) and \(\cos 2 \theta\) are solutions of \(x^2+a x-c=0\), then
- A \(a^2-2 c-1=0\)
- B \(a^2+2 c-1=0\)
- C \(a^2+2 c+1=0\)
- D \(a^2-2 c+1=0\)
Answer & Solution
Correct Answer
(B) \(a^2+2 c-1=0\)
Step-by-step Solution
Detailed explanation
\(x^2+a x-c=0\)…
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