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What is the value of \(\rm \sqrt{1 - \cos^2 θ}\)
1. sec θ
2. sin θ
3. cos θ
4. tan θ

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Correct Answer - Option 2 : sin θ

Concept:

sin2θ + cos2θ = 1

Calculation:

sin2θ + cos2θ = 1

⇒ sin2θ = 1 – cos2θ

⇒ sin θ  = \(\rm \sqrt{1 - \cos^2 θ}\)

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