Question
Download Solution PDF\(\cos ^2 θ=\frac{3}{4}\) இல் θ குறுங்கோணம் எனில் sin (θ + 30°) இன் மதிப்பு என்ன?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்டவை:
Cos2 θ = 3/4
பயன்படுத்தப்படும் சூத்திரம்:
Cos 30° = Sin 60° = √3/2
கணக்கீடு:
Cos2 θ = 3/4
⇒ cos θ = √(3/4) = √3/2
⇒ cos θ = cos 30°
⇒ θ = 30°
sin (θ + 30°) = sin (30° + 30°).
⇒ sin 60° = √3/2.
∴ சரியான பதில் √3/2.
Last updated on Jul 7, 2025
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