Equilateral triangle Definition and 102 Threads

  1. N

    Proving an Equilateral Triangle: Trig Identities Explained

    Trig identities please help In triangle ABC if sin (A/2) sin (B/2) sin (C/2) = 1/8 prove that the triangle is equilateral please show steps
    • nelraheb
    • Thread
    • Equilateral triangle identities Triangle Trig Trig identities
    • Replies: 12
    • Forum: General Math
  2. G

    Express the area of an equilateral triangle as a function

    If A=x^2 and 2y-3x=12, express A as a function of y. i got A= 4/9y^2 - 2/3y + 20 is that right? and Express the area of an equilateral triangle as a function of its side.