Introduction to Trigonometric Ratios | Episode 9
Mathematics Simplified27 Aug 2025

Introduction to Trigonometric Ratios | Episode 9

Confused about which trigonometric functions are positive in different quadrants?

In this episode of Mathematics Simplified, we break down the sign convention of trigonometric functions in all four quadrants in the simplest way possible. Learn the logic behind the signs, understand the coordinate plane connection, and remember it forever with the powerful ASTC rule (All Students Take Coffee).

By the end of this episode, you’ll never mix up signs of sine, cosine, tangent, and their reciprocals again! Perfect for Class 10, 11, and 12 students, as well as anyone brushing up on trigonometry for competitive exams.

✔️ Clear explanation of all 4 quadrants✔️ Easy memory trick (ASTC Rule)✔️ Quick revision for exams


Start listening now and make trigonometry easier than ever!

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