Introduction Trigonometric identities often confuse Class 10 students, but they are actually the simplest once you know the logic. These identities are the backbone of trigonometry and are repeatedly used in exams. In this blog, I’ll walk you through the proof of three trigonometric identities with clear steps and examples. You’ll also find a video lesson embedded for easier understanding.…
Tag: class 10 maths
Example 2: If ∠B and ∠Q are acute angles such that sin B = sin Q, then prove that ∠B = ∠Q
To Prove: ∠B=∠Q\angle B = \angle Q Given: ∠B and ∠Q are acute angles sin B = sin Q Proof: Let us consider two right triangles: ΔABC, right-angled at C ΔPQR, right-angled at R Step 1: Write sine values in each triangle In ΔABC: sinB=ACAB⋯(1)\sin B = \frac{AC}{AB} \quad \cdots (1) In ΔPQR: sinQ=PRPQ⋯(2)\sin Q = \frac{PR}{PQ} \quad \cdots…
Why Sin A and Cos A are always less than 1 in Right Triangles – Class 10
Let’s break this down step by step so you fully understand why this is always true. 📌 What Is a Right Triangle? A right triangle is a triangle with one 90-degree angle. The side opposite this right angle is called the hypotenuse. The other two sides are called the perpendicular and the base — they are always shorter than the…
📚 Learn to Find All Trigonometric Ratios in 2 Minutes! Sin θ, Cos θ, Tan θ, Cosec θ, Sec θ, Cot θ | Class 10
Many students find this chapter confusing at first — but once you crack the Pandit Badri Prasad Trick, trust me, it becomes one of the easiest scoring topics. ✅ The 3 Sides of a Right-Angle Triangle Before jumping into ratios, know the 3 sides: 1️⃣ Perpendicular (Opposite Side) — side opposite to the given angle (except the…
📚 Introduction to Trigonometry – Class 10 NCERT Chapter 8
Posted by Aman Sir | Maths Vidya Institute 🎥 Watch the complete video here: Trigonometry is one of the most important concepts you’ll learn in Class 10 CBSE Maths. It teaches how angles and sides of a right triangle relate to each other. This chapter forms the base for Class 11, Class 12, and even science and engineering courses. 🔍…