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Presentation1

1. 1. By:Dayhana Rojas Trig for dummies
2. 2. Basic Equations for Trigonometry Sec = 1/Cos Sin  = Opp/Hyp Sin = Sin Cos  = Adj/Hyp Cos = Cos Tan  = Opp/Adj Sec  = 1/Cos  Csc  =1/Sin  Tan  =Sin  /Cos  Cot  =Cos  /Sin 
3. 3. Reference Angle- reference angle is an angle formed by the x axis and the terminal side of the angle. It is an acute and is always positive. Its measure will always be between 0 and  /2. Conterminal Angles- Angles that are drawn in standard position and share a terminal side.
4. 4. The Amazing Circle I (A) II (S) III (T) IV (C) <ul><li>A good way to remember the amazing circle is All Students Take Class </li></ul><ul><li>Cos is always positive in qudarant 4 </li></ul><ul><li>-tangent is always positive in quadrant 3 </li></ul><ul><li>Sin is always positive in quadrant 3 </li></ul><ul><li>Anything is positive in quadrant 1 </li></ul><ul><li>- Any other way is Negative </li></ul>
5. 5. Pythagorean identity Sin^2  + Cos^2  =1 1+tan2  =Sec^2  1+Cot^2  =Csc^2 