Скачать или смотреть 🔥 If cosθ + sinθ = √2 cosθ, prove that cosθ – sinθ = √2 sinθ ||

⭐ CBSE Class 10 Trigonometry | Most Expected Question 2025–26!

🔥 If cosθ + sinθ = √2 cosθ, prove that cosθ – sinθ = √2 sinθ
This is one of the most important & repeated questions from CBSE 2019 Board Exam (30/1/1).
In this video, we explain the solution in a super easy way so you can understand and remember it instantly!

👉 Perfect for Class 10 Boards, NCERT Exam Prep, and Quick Revision
👉 Step-by-step explanation
👉 Guaranteed exam-oriented concept

📘 Don’t skip! This identity trick will boost your marks in Trigonometry.
🌟 CBSE Class 10 Mathematics – MOST IMPORTANT TRIGONOMETRY QUESTION (Guaranteed in Exams!)

Welcome to today’s powerful maths session!
In this video, we decode one of the most repeated and most expected trigonometry questions from the CBSE Board Exam 2019 (Set 30/1/1):

🟩 Question:
If cosθ + sinθ = √2 cosθ, show that cosθ – sinθ = √2 sinθ.

This question looks tricky, but with the right identity trick, it becomes extremely simple.
We explain the whole solution using:
✨ Zero confusion method
✨ Step-by-step reasoning
✨ Smart ratio technique
✨ Concept clarity in just 2 minutes
✨ Board exam-friendly approach

This explanation helps you understand:
🔹 How to convert trigonometric sums into ratios
🔹 How dividing both sides can make the question easy
🔹 The hidden identity behind √2
🔹 Why this question is a favourite in CBSE papers
🔹 How to remember this for lifetime

If you're a Class 10 student or preparing for CBSE 2025–26, this problem is a must practice.
Master this and you can handle many similar questions instantly in exams.

🎯 This video is perfect for:
✔ CBSE Class 10 Board Preparation
✔ NCERT Chapter – Trigonometry Revision
✔ Quick Exam Practice
✔ Last-Minute Concept Booster
✔ Maths Fast Revision Series
✔ Students aiming for 90+ in Maths

⭐ Don't forget: One identity can change your entire approach to trigonometry!

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