module 1 tutorial

1. Core meaning of trignometry

What is Trigonometry?

🔹 Meaning of Trigonometry

Trigonometry is a branch of mathematics that studies the relationship between angles and sides of triangles.

The word comes from:

• Trigonon → triangle

• Metron → measure

Simply put, trigonometry means measuring triangles.

🔹 Where is Trigonometry Used?

Trigonometry is used in everyday life:

• 🏗️ Buildings & construction – finding heights and distances

• 🪜 Ladders & slopes – measuring how high or steep something is

• 🌳 Shadows – finding height using shadow length

• 🧭 Navigation & maps – directions, GPS, aircraft routes

🔹 Why Triangles Matter

• Triangles are simple and stable shapes

• Angles and sides are easy to relate

• Most real-life problems can be converted into triangle problems

👉 Trigonometry mainly uses right-angled triangles.

✅ Lesson 1 Key Takeaway

✔ Trigonometry connects angles and sides
✔ It is used in real life
✔ Triangles are the base of this topic