PA, QB and RC are each perpendicular to AC.If AP = x, QB = z, RC = y, AB = a and BC = b, then prove

PA, QB and RC are each perpendicular to AC. If AP = x, QB = z, RC = y, AB = a and BC = b, then prove that 1/x + 1/y = 1/z. Description: In this video, we solve an important 5 Marks Proof Question from Class 10 Maths Chapter 6 – Triangles (Similar Triangles). Given that PA, QB and RC are perpendicular to AC, we prove the important result: 1/x + 1/y = 1/z. 🔥 This is a very important PYQ-type question for CBSE Board Exam 2026 and is frequently asked in exams. Topics Covered: Similar Triangles Basic Proportionality Theorem Proof-based questions Board exam important 5 marks questions Concept clarity for CBSE 2025-26 This question is extremely helpful for students preparing for: ✔ CBSE Class 10 Board Exam 2026 ✔ Pre-board exams ✔ School exams ✔ Last-minute revision Make sure to watch till the end for complete step-by-step explanation. Related Search: class 10 maths class 10 maths chapter 6 class 10 triangles similar triangles class 10 class 10 maths pyq cbse board exam 2026 maths class 10 maths important questions prove 1/x + 1/y = 1/z 5 marks maths question class 10 cbse class 10 maths proof questions triangles important questions class 10 maths revision 2026 girsh sir maths cbse maths preparation board exam maths 2026 class 10 maths triangles pyq 2026 class 10 maths chapter 6 important questions similar triangles proof questions class 10 5 marks question from triangles class 10 cbse class 10 maths board exam important proof class 10 maths last minute revision triangles class 10 maths previous year questions chapter 6 prove 1/x + 1/y = 1/z class 10 #cbseexam2026 #class10pyq #class10mathspyqs #class10triangles #class10maths #girishsir #mathnerd #cbse2025 #cbse2026 #cbseexam2025 #cbseboard2026 #cbseboardexam #class10mathematic #study #studytips