Question
Download Solution PDF\(\Delta\)ABC இல், \(\overline {AD}\) என்பது \(\angle\)A இன் இரு சமவெட்டி மற்றும் D என்பது \(\overline {BC}\) இல் ஒரு புள்ளியாகும். m (\(\overline {AC}\)) = 4.2 செ.மீ, m (\(\overline {BD}\)) = 4 செ.மீ மற்றும் m (\(\overline {BC}\)) = 7 செ.மீ எனில், m (\(\overline {AB}\)) ஐக் கண்டறியவும்.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்டவை:
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
ABC இல், \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) என்பது \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)A இன் இரு சமவெட்டி மற்றும் D என்பது \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\) இல் ஒரு புள்ளியாகும். m (\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)) = 4.2 செ.மீ, m (\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)) = 4 செ.மீ மற்றும் m (\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)) = 7 செ.மீ
கணக்கீடு:
DC = BC - BD = 7 - 4 = 3 செ.மீ
கோண இருமுனை தேற்றத்தின்படி:
AB : AC = BD : DC
⇒ AB : 4.2 = 4 : 3
⇒ AB = 4 × 4.2/3
⇒ AB = 5.6 cm
எனவே, தேவையான மதிப்பு 5.6 செ.மீ.
Last updated on Jul 11, 2025
-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.
-> The RRB Group D Exam Date will be soon announce on the official website. Candidates can check it through here about the exam schedule, admit card, shift timings, exam patten and many more.
-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025.
-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.
-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a National Apprenticeship Certificate (NAC) granted by the NCVT.
-> This is an excellent opportunity for 10th-pass candidates with ITI qualifications as they are eligible for these posts.
-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.
-> Prepare for the exam with RRB Group D Previous Year Papers.