\(\rm sec \theta \sqrt{1 - sin^2\theta} = ?\)

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SSC CGL 2023 Tier-I Official Paper (Held On: 25 Jul 2023 Shift 2)
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  1. -1
  2. 1
  3. 0

Answer (Detailed Solution Below)

Option 2 : 1
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Detailed Solution

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অনুসৃত সূত্র:

1 - sin2 θ = cos2 θ

Sec θ × cos θ = 1

গণনা:

Sec θ × √{1 - sin2 θ}

⇒ Sec θ × √{cos2 θ} 

⇒ Sec θ × cos θ = 1

∴ সঠিক উত্তর হল 1

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