Understanding Cofunction Identities: Sin(90°-θ) = Cos(θ) Explained

Unlock the secrets of Trigonometry with this clear guide to Cofunction Identities! 📐✨

In this video, we break down the relationship between complementary angles and how they affect Sine, Cosine, and Tangent. You will learn why "Cosine" gets its name and how to solve problems using these simple identities. Perfect for geometry and trigonometry students!

We cover:
What are complementary angles? 🤔
Visual proofs using right triangles 🔺
The full list of identities (Sin/Cos, Tan/Cot, Sec/Csc) 📝
Step-by-step practice problems ✅

Make math easier by understanding the concepts behind the formulas. Don't forget to like and subscribe for more math tutorials! 🎓🚀

Chapters:
00:00 - Cofunction Identities
00:22 - What are Complementary Angles?
00:46 - The Right Triangle Context
01:10 - Reference Angle: Theta
01:32 - Reference Angle: 90 minus Theta
01:54 - Compare the Results
02:13 - The Cofunction Identities
02:34 - Why is it called Cosine?
02:52 - Example 1: Simplify
03:13 - Example 2: Find the Angle
03:33 - Key Takeaways
03:54 - Outro

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