Every Student Needs This Geometry Trick! 📐 (3-5-7 Triangle Mystery Solved)
Автор: Trick=Treat
Загружено: 2026-02-17
Просмотров: 503
Описание:
Today, we’re looking at a triangle that looks simple—sides of 3, 5, and 7—but it’s hiding a secret. Our mission? Find the exact measure of Angle C without touching that dusty old Law of Cosines. We’re going to solve this using nothing but our old friend, the Pythagorean Theorem!
Video Timestamps
0:00 – The 3-5-7 Triangle Mystery 📐
0:42 – Why the Law of Cosines is a "Mouthful"
1:15 – The "Shared Wall" Hack: Building a Right Angle 🏗️
1:58 – Setting Up the Equations
2:45 – The Algebra "Treat": Canceling the x squared term
3:30 – Revealing the 60° Exterior Angle
4:10 – The Final Answer: Why Angle C is 120° 🏆
4:45 – Bonus: How to use this for Angle A!
#Geometry Hack, #Pythagorean Theorem Trick, #Solve Triangles Without Law of Cosines
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