1. Pre-Calculus Unit #4: Day 3

2.  Coterminal angles are angles in standard position (angles with the initial side on the positive x-axis) that have a common terminal side.  For example 30°, –330° and 390° are all coterminal. http://hotmath.com/hotmath_help/topics/coterminal-angles.html

3.  Find a positive and a negative angle coterminal with a 55° angle. http://hotmath.com/hotmath_help/topics/coterminal-angles.html

4.  Find a positive and a negative angle coterminal with a 55° angle. ◦ 55° – 360° = –305° http://hotmath.com/hotmath_help/topics/coterminal-angles.html

5.  Find a positive and a negative angle coterminal with a 55° angle. ◦ 55° – 360° = –305° ◦ 55° + 360° = 415° http://hotmath.com/hotmath_help/topics/coterminal-angles.html

6.  Complementary angles are two angles whose measures add up to 90 o. http://hotmath.com/hotmath_help/topics/complementary-angles.html

7.   1 = 2x+1 and  2 =3x+4. If these angles are complements, then what is the value of x?

12.  Supplementary angles are two angles whose measures add up to 180 o. http://hotmath.com/hotmath_help/topics/supplementary-angles.html

13. Find the supplement of each of the following given angles: a.) 65° b.) 109° c.) 4z°

14. Find the supplement of each of the following given angles: a.) 65° b.) 109° c.) 4z°

15. Find the supplement of each of the following given angles: a.) 65° b.) 109° c.) 4z°

16. Find the supplement of each of the following given angles: a.) 65° b.) 109° c.) 4z°

18. 1. Determine the quadrant of the given angle. 2. Draw a right triangle to find the missing side of the triangle. (Pythagorean Thm.) 3. Set up the trig functions using the appropriate signs.

19.  Given that and  is in the second quadrant, find the other 5 function values.

20.  2 3

21.  2 3

22.  2 3  sin  =  cos  =  cot  =  sec  =  csc  =

23.  Given that and  is in the second quadrant, find the other 5 function values.  2 3  sin  =  cos  =  cot  =  sec  =  csc  =

24.  Given that and  is in the second quadrant, find the other 5 function values.  2 3  sin  =  cos  =  cot  =  sec  =  csc  =

25.  Given that and  is in the second quadrant, find the other 5 function values.  2 3  sin  =  cos  =  cot  =  sec  =  csc  =

26.  The reference angle is the acute angle formed by the terminal side of the given angle and the x-axis.