- Author – Kapila Silva, Senior Lecturer, Department of Mathematics, University of Sri Jayewardenepura
- Medium – Sinhala
- Pages – 204
- Theory, Questions and Answers relevant to New A/L syllabus
- This book covers elementary and advanced topics in GCE A Level trigonometry.
Mr Kapila Silva is a Senior Lecturer at Mathematics Department of University of Sri Jayewardenpura. He conducts school seminars, teacher training, produced several combined mathematics video lessons with University of Sri Jayewardenepura Open Learning.
He has a vast knowledge on the subject, and ability to express complex problems in simple way, and has involved in GCE Advanced Level examinations for long. time.