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JEE Mains · Maths · STD 11 - Trigonometrical equations

\(R\) में समीकरण \(2 \theta-\cos ^2 \theta+\sqrt{2}=0\) के हलों की संख्या है \(........\)

  1. A \(1\)
  2. B \(2\)
  3. C \(3\)
  4. D \(4\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(1\)

Step-by-step Solution

Detailed explanation

\(2 \theta-\cos ^{2} \theta+\sqrt{2}=0\) \(\Rightarrow \cos ^{2} \theta=2 \theta+\sqrt{2}\) \(y=2 \theta+\sqrt{2}\) Both graphs intersect at one point.
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