Simplifying acosx +- bsinx (Edexcel IAL P3 4.5).

Pearson Edexcel IAL Pure Mathematics 3 Unit 4.5 Simplifying acosx +- bsinx Unit 4 Trigonometric Addition Formulae Solve trigonometric equations using the addition to turn into a single identity of the form Rsin(theta+alpha) or Rcos(theta+alpha) Updated