Question
Download Solution PDFजर 2 sinθ + 2 sin2θ = 2 असेल, तर 2 cos4θ + 2 cos2θ चे मूल्य आहे:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेल्याप्रमाणे:
2 sinθ + 2 sin2θ = 2
वापरलेली संकल्पना:
sin2 θ + cos2 θ = 1
गणना:
2 sinθ + 2 sin2θ = 2
⇒ sinθ + sin2θ = 1
⇒ sin θ + 1 - cos2 θ = 1
⇒ sin θ = cos2 θ
⇒ cos4 θ = sin2 θ
तर,
2 cos4θ + 2 cos2θ = 2 sin2 θ + 2 sin θ
⇒ 2
∴ आवश्यक उत्तर 2 आहे.
Last updated on Jul 14, 2025
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