दो बिंदुओं (-6, y) और (18, 6) के बीच की दूरी 26 इकाई है। Y का मान ज्ञात कीजिए।

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  1. 4
  2. -4
  3. 6
  4. -6

Answer (Detailed Solution Below)

Option 2 : -4
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दिया गया है:

दो बिंदुओं (-6, y) और (18, 6) के बीच की दूरी 26 इकाई है।

प्रयुक्त सूत्र:

D = \(\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\)

जहाँ,

दो बिंदुओं (x1, y1) और (x2, y2) के बीच की दूरी D इकाई है।

गणना:

दो बिंदुओं के बीच की दूरी = 26 इकाई

पहले निर्देशांक का मान = (x1, y1) = (-6, y)

दूसरे निर्देशांक का मान = (x2, y2) = (18, 6)

प्रश्न के अनुसार,

⇒ D = \(\sqrt{(18-(-6))^2 + (6-y)^2} \)

⇒ 26 = \(\sqrt{(24)^2 + (6-y)^2} \)

समीकरण के दोनों ओर वर्ग करने पर,

⇒ 676 = 242 + (6 - y)2

⇒ 676 = 576 + (6 - y)2

⇒ 100 = (6 - y)2

⇒ 102 = (6 - y)2

समीकरण के दोनों ओर वर्गमूल करने पर,

⇒ 10 = 6 - y

⇒ y = -4

∴ अभीष्ट उत्तर -4 है

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