Question
Download Solution PDFఒకవేళ sin θ =\(1 \over 2\) అయితే, (3cos θ - 4 cos3 θ) విలువ కనుగొనండి?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFఇచ్చిన సమస్య:
sin θ = \(1 \over 2\)
ఉపయోగించిన భావన:
సాధన:
sin θ = \(1 \over 2\)
⇒ sinθ = sin 30°
అయితే, θ = 30°
3cos θ - 4 cos3 θ
⇒ 3 × \(\sqrt3 \over 2\) - 4 × \(3\sqrt3 \over 8\)
⇒ \({3\sqrt3 \over 2} - \frac{3\sqrt3}{2}\)
⇒ 0
∴ అవసరమైన సమాధానం 0.
Last updated on Jul 10, 2025
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