Trig

• Sin = Opposite/Hypotenuse
• Cos = Adjacent/Hypotenuse
• Tan = Opposite/Adjacent
• Cosine Rule: a^2 = b^2 + c^2 - 2bccosA
• The smallest angle will always be opposite the smallest side
• The largest angle will be opposite the largest side
• Sine Rule: (sinA/a) = (sinB/b)
• SinX = Sin(180 - X)
• Area of a triangle: 0.5 * a * b *sinC
• Graph

  A) sin

  
• Graph

  A) cos

  
• Graph

  A) tan

  
• tan90 doesn't exist
• cosx = sin(x + 90)
• sin2x + cos2x = 1
• sinx/cosx = tanx
• When you scale a function, you scale a derivative
• The default value given in a sin equation is known as the principal value