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🔥 Class 12 Maths Important Question | Matrix Formula Proof 🔥 | Aⁿ Formula Easy Trick | Board Exam 2026

📚 In this video, we solve a very important Class 12 Mathematics question based on matrices and trigonometric form:
👉 If A=\begin{bmatrix}\cos\theta & \sin\theta\-\sin\theta & \cos\theta\end{bmatrix}, prove that
A^n=\begin{bmatrix}\cos n\theta & \sin n\theta\-\sin n\theta & \cos n\theta\end{bmatrix}

✅ Step-by-step clear proof
✅ Concept + exam shortcut method
✅ Board exam oriented explanation
✅ Perfect for revision before exams
✅ Must-watch important question

👨‍🏫 By Anshudhar Tiwari
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