Subcategories

• Week 1

  Hexagon Area; Octagon Area; Round Area; Diagonal Area

  Day 1

  Day 2

  Day 3

  Day 4
  51
  Topics
  181
  Posts

  

  LOL because i joined but didn't do any math

• Week 2

  Trapezoid Lengths; Angles in Circles; Chord Distances; Cyclic Quadrilateral

  Day 5

  Day 6

  Day 7

  Day 8
  44
  Topics
  169
  Posts

  R

  You can also solve this mini-question by using the answer choices. Since we know (maybe you don't) that the hypotenuse is the longest side of the triangle, the only answer that is longer than the other sides of the triangle is 68. Take this triangle. If you were an ant and were to crawl up to the point on the very top of the triangle from the bottom, only on the sides of the triangle, then which path would be longer, the leg, or the hypotenuse? Of course it is the hypotenuse! This works for every triangle. Want to know why? Go to https://www.vedantu.com/question-answer/prove-that-in-a-right-angled-triangle-hypotenuse-class-9-maths-cbse-5f5da7ee68d6b37d16638a9d#:~:text=Construction%3A -Draw a right angled,AC is a hypotenuse side.&text=⇒∠BCA and ∠CAB,be less than 90 degree.&text=Thus hypotenuse AC is the longest side. to find out!

• Week 3

  Tangency; Tangent Angles; Common Tangents; Inscribed Circle

  Day 9

  Day 10

  Day 11

  Day 12
  37
  Topics
  113
  Posts

  

  Hi @vibrantrobin !
  When you use \(\frac{a-b}{2}\), remember that \(a\) is the arc opposite of the angle on the other side of the circle, while \(b\) is the arc close to the circle.
  

  Here's a visual of what the formula looks like:
  

  Do you see how, in the original problem, the larger arc is \(\frown \atop AB \) \( = 130^{\circ} \) while the smaller arc is the \(30^{\circ}\) arc. Then we can just do \(\frac{130^{\circ}-30^{\circ}}{2} = 50^{\circ}\)

• Week 4

  Angle Bisector; Shortest Paths; Triangle Sides; Amazing Triangle Area

  Day 13

  Day 14

  Day 15

  Day 16
  34
  Topics
  98
  Posts

  

  @energizedpanda Hey there! Are you talking about Module 2 Day 14?