A great video lecture conducted by experienced mathematics teacher on ECAT class mathematics chapter 10 topic fundamental law of trigonometry. Get full understanding or ask any questions.
Fundamental Law of Trigonometry, ch 10, lec , Fundamental Law of Trigonometry - ECAT Entry Test Mathematics
20:30
Ch 10 Lecture 10 Trigonometric Identities, ch 10, lec , Fundamental Law of Trigonometry - ECAT Entry Test Mathematics
57:28
