📐 Geometry Brahmastra #3 | Inradius in 3 Seconds
Right triangle: perimeter 70, hypotenuse 29 → inradius?
r = (a + b − c)/2 … or even shorter, r = s − c = 35 − 29 = 6 ✅
No area, no legs needed.
🧠 Your Turn: perimeter 56, hypotenuse 25 → r = ?
▶️ https://youtube.com/shorts/e8D9Z0lDIaU
📘 Geometry Brahmastra: https://azucation.org.in/learn/course/geometry-brahmastra/
#CAT2026 #CATGeometry #GeometryBrahmastra
Right triangle: perimeter 70, hypotenuse 29 → inradius?
r = (a + b − c)/2 … or even shorter, r = s − c = 35 − 29 = 6 ✅
No area, no legs needed.
🧠 Your Turn: perimeter 56, hypotenuse 25 → r = ?
▶️ https://youtube.com/shorts/e8D9Z0lDIaU
📘 Geometry Brahmastra: https://azucation.org.in/learn/course/geometry-brahmastra/
#CAT2026 #CATGeometry #GeometryBrahmastra
YouTube
Inradius of a Right Triangle in 3 Seconds 📐 | Geometry Brahmastra #3 | CAT 2026
Stop finding the area to get the inradius! For any right triangle there's a 3-second Brahmastra:
r = (a + b − c) / 2 (legs minus hypotenuse, divided by 2)
Even shorter: r = s − c (semi-perimeter minus hypotenuse)
Why it works: from the right-angle corner…
r = (a + b − c) / 2 (legs minus hypotenuse, divided by 2)
Even shorter: r = s − c (semi-perimeter minus hypotenuse)
Why it works: from the right-angle corner…