solve the given system using themethod of Example 3.25

1.1 – Trigonometry Vocabulary 1. Trigonometry – the study of triangles. 2. Ray – one half of a line 3. Angle – two rays connected by a common vertex  Angle measured counterclockwise is a positive angle  Angle measured clockwise is a negative angle. 4. Acute Angle – positive angle measuring between 0­90 degrees. 5. Right Angle – measures 90 degrees. 6. Straight Angle – a line with measure of 180 degrees 7. Obtuse Angle – a positive angle measuring more than 90 degrees. 8. Quadrant/Quadrantal Angle – Angles that divide the coordinate system into quadrants.  An angle is in standard position if its vertext5 is at the origin and its initial side is the positive x axis.  Coterminal Angles have the same initial and terminal sides. One Circle = One Revolution = 360 degrees = 2π π Complementary Angles – Two positive angles that sum to 90 degrees or2 Supplementary Angles – Two positive angles that sum to 180 or . Circle – set of all points equidistant from a fixed (central) point. Formulas: S=rθ Arc Length Formula: ( θ mustbe∈radianmeasure 1r θ Area of a sector = 2 ( θ mustberadians¿ D ° M’S” notation 60 min = 1 degree 60 seconds = 1 minute