1 Semester

1 Semester

1. Trigonometry origins

   • It comes form the the greek word, "trigon" and "metron"
   • It began with the Greeks in 150 B.C.
   • 3 concepts, sine, cosine and tangent

2. Point, line, ray and segments

   • Point= Exact position in space
   • Line= infinite set of points that expand in both directions
   • Segment= part of a line defined by 2 endpoints
   • Ray= part of a line with 1 endpoint it extend in 1 direction

3. Angles

   • 2 Rays that share the same endpoint form a angle
   • Acute- 0-90° Obtuse- 90- 180° Right angle 90° Straight 180°

4. Radians to degrees

   • degree by (x) pi/ 180
   • degree by 180/ pi