939f801a-1dd7-4fc4-bbac-f00b60034d198907b26a-9006-4e85-a523-ea243e2a955b2.13.8[{"lang":"es","name":"Relaciones trigonométricas fundamentales"},{"lang":"en","name":"Fundamental trigonometric relations"},{"lang":"ca","name":"Relacions trigonomètriques fonamentals"}]67/18/16, 11:43 AM7/18/16, 11:43 AM