Learning Math

Have you ever wondered what those COS, SIN, and TAN buttons on the calculator are for. Well I have learnt the answer. They stand for Cosine (cosign), Sine (sign), Tangent are for TRIGONOMETRY, the study of triangles. I figured I could share this knowledge with all of those who has not yet learnt what they mean. Add the knowledge to your brain, store it in your mind. And maybe sometime in the furture it will be help full, like when you have the length of one side and the degree of one angle for a triangle and you really need to find the answer.