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Curated by: PW NIMCET (63 videos)
In this session, we continue with Solution of Triangles – Part 2 for NIMCET 2026 Mathematics preparation. This lecture focuses on important concepts, formulas, and problem-solving techniques related to trigonometry and triangle solutions, which are frequently asked in the exam. 📐📚 You will learn how to apply sine rule, cosine rule, and other trigonometric identities to solve different types of triangle problems quickly and accurately. The class also includes concept explanations, exam-oriented examples, and practice questions to strengthen your preparation for NIMCET 2026. This session is highly useful for students aiming to improve their speed, accuracy, and conceptual clarity in trigonometry, an important section of the NIMCET Mathematics syllabus. ----------------------------------------- Timestamps- 0:00 Introduction to Solution of Triangles (SOT) Part 2 1:13 Recap of Part 1: Sine Rule and Circumradius (Capital R) 3:36 Today's Session Objectives: Cosine Rule, Projection Rule, & Half-Angle Formulas 4:32 Q1: NIMCET 2015 PYQ - Ratio of Angles vs. Ratio of Sides (2:3:7) 9:36 Shortcut Trick: Comparing Side Ratios without complex Sine calculations 12:36 Introduction to Cosine Rule: Determining angles when all sides are given 14:27 Visual Derivation: Understanding the origin of Cosine formulas via altitudes 16:14 Master Formulas: Cos A, Cos B, and Cos C breakdown 18:54 Q2: Practice Problem - Finding the "Greatest Angle" given variable sides (x²+x+1) 21:47 Shortcut: Using variable substitution (x=2) to find side lengths quickly 24:55 Q3: NIMCET 2013 PYQ - Solving for Angle C using Cosine Rule manipulation 29:53 Introduction to Napier’s Analogy (The Tangent Rule) 31:47 Algebraic Link: Using Componendo & Dividendo to derive the Tan Rule 34:51 Master Formulas: Tan(A-B/2) and its cyclic variations 36:00 Q4: NIMCET 2022 PYQ - Application of Tangent Rule in Ratio of Sides 40:24 Introduction to Projection Formula: Side length in terms of Cosines 42:53 Q5: NIMCET 2021 PYQ - Solving A-C-B relationships using Projection Rule 47:15 Half-Angle Formulas Deep Dive: Sine, Cosine, and Tangent variations 50:52 Master Chart: Sin(A/2), Cos(A/2), and Tan(A/2) using Semi-perimeter (s) 55:23 Pro-Tip: Expressing Tan(A/2) in terms of Area (Δ) and Semi-perimeter 59:19 Q6: NIMCET 2014 PYQ - Finding product of areas using Half-Angle logic 1:02:32 Summary of Day 2 Topics and Preview for Part 3 ------------------------------------------------------------------------------------------ 📌Samarth NIMCET 3.0 2026: MCA https://physicswallah.onelink.me/ZAZB/pn8t4ez3 📌Samarth NIMCET Pro 2026: MCA https://physicswallah.onelink.me/ZAZB/u3lh4bwe 📌Samarth NIMCET 2.0 2026: MCA One link https://physicswallah.onelink.me/ZAZB/vz9z914e 📌Samarth NIMCET 2026: MCA https://physicswallah.onelink.me/ZAZB/xpcln4ig 📲 PW App: https://physicswallah.onelink.me/ZAZB/PWAppWEb 📚 PW Store: https://physicswallah.onelink.me/ZAZB/qqee0bv4 ------------------------------------------------------- 📌 𝐑𝐄𝐂𝐎𝐌𝐌𝐄𝐍𝐃𝐄𝐃 𝐂𝐇𝐀𝐍𝐍𝐄𝐋𝐒 𝐅𝐎𝐑 𝐘𝐎𝐔 - 🌐 Physics Wallah - Alakh Pandey: https://www.youtube.com/@PhysicsWallah 🌐 PW IIT JAM & CSIR NET: https://www.youtube.com/@pwiit-jam 🌐 PW UGC NET : https://www.youtube.com/@pwugcnet ------------------------------------------------------- 📌 PHYSICS WALLAH SOCIAL MEDIA - 🌐 Telegram: https://t.me/Physics_Wallah_Official_Channel 🌐 Instagram: https://www.instagram.com/physicswallah 🌐 Facebook: https://www.facebook.com/physicswallah 🌐 Twitter: https://www.twitter.com/physics__wallah 🌐 LinkedIn: https://www.linkedin.com/company/physicswallah 🌐 Quora: https://pwofficial.quora.com 📌 For any Queries or Complaints visit: https://bit.ly/PW_ Queries OR give a Missed Call on 07019-243-492 #NIMCET2026 #NIMCETPreparation #NIMCETMaths #NIMCETAspirants #nimcetexam #Trigonometry #TrigonometricRatios #TrigonometricFunctions #MathsForNIMCET #EngineeringMaths#MCAEntrance #MCAPreparation #MCA2026 #MathsConcepts #CompetitiveMaths #NIMCET2026 #NIMCETPreparation #NIMCETMaths #MathsRevision #NIMCETStrategy #MCAEntranceExam #NIMCET2026Preparation #MathsForNIMCET #NIMCETExam #NIMCETStudents