GCE O-Level A-Maths: Trigonometry R-Formula (Full Working)

Content: Full working on the derivation of R-Formula. In some schools, students can apply the two formulas directly but in other schools, some students must go through the entire derivation. For more O-Level A-Math tips, go to http://www.singaporeolevelmaths.com Content of video is based on Singapore GCE O-Level Additional Mathematics syllabus (4047)