দুটি বিন্দু (-6, y) এবং (18, 6) এর মধ্যে দূরত্ব হল 26 একক, y এর মান নির্ণয় করুন?

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

Answer (Detailed Solution Below)

Option 2 : -4
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Detailed Solution

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প্রদত্ত:

দুটি বিন্দু (-6, y) এবং (18, 6) এর মধ্যে দূরত্ব হল 26 একক।

অনুসৃত সূত্র:

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

যেখানে,

দুটি বিন্দু (x1, y1) এবং (x2, y2) এর মধ্যে দূরত্ব হল D একক।

গণনা:

দুই বিন্দুর মধ্যে দূরত্ব = 26 একক

প্রথম স্থানাঙ্কর মান = (x1, y1) = (-6, y)

দ্বিতীয় স্থানাঙ্কের মান = (x2, y2) = (18, 6)

প্রশ্ন অনুযায়ী,

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

⇒ 26 = \(\sqrt{(24)^2 + (6-y)^2} \)

সমীকরণের উভয় পাশে বর্গ নিয়ে

⇒ 676 = 242 + (6 - y)2

⇒ 676 = 576 + (6 - y)2

⇒ 100 = (6 - y)2

⇒ 102 = (6 - y)2

সমীকরণের উভয় পাশে বর্গমূল নেওয়া হচ্ছে।

⇒ 10 = 6 - y

⇒ y = -4

∴ নির্ণেয় উত্তর হল -4

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