सदिश 7î + 4ĵ - 3k̂ का दिशा कोसाइन ज्ञात कीजिए। 

  1. विकल्प 1 और 2 दोनों 
  2. इनमें से कोई नहीं 

Answer (Detailed Solution Below)

Option 3 : विकल्प 1 और 2 दोनों 
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CUET General Awareness (Ancient Indian History - I)
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Detailed Solution

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संकल्पना:

सदिश aî + bĵ + ck̂ के दिशा कोसाइन को α = , β =  और γ =  द्वारा ज्ञात किया गया है। 

गणना:

दिए गए सदिश 7î + 4ĵ - 3k̂ के लिए, a = 7, b = 4 और c = -3

सदिश के दिशा कोसाइन निम्न हैं:

α = , β =  और γ = 

⇒ α = , β =  और γ =  

∴ (α , β , γ ) = () या (​)

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