Recent content by Dainy

  1. D

    How Do Trigonometric Identities Connect to Drawings?

    yes well I got the last problem...but I still want to have an idea were the identity siny+sinx=2sin(x+y)/2cos(x+y)/2 came from please someone sort of explain please! thanx
  2. D

    I really need an answer-Derive trig identity

    [FONT=Comic Sans MS]undefinedundefinedundefinedneed help=====) (sin2x+sin4x)/(cos2x+cos4x)=tan3x
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