12-17+Morgan+Graham

TPJ December 17, 2008 First thing you did as you walked into the class was pick up the worksheet “Vector Problems with Trig Functions!” pages 24-25. Then we took out the homework worksheet “Using the Trig Functions” page 23, which we got on 12/16/08. We went over the answers from the worksheets. Answers! 1. (a) The opposite side would be the vertical side. The horizontal side would be labeled as the adjacent side. Then the diagonal side is the hypotenuse side. (b) The opposite side would be the vertical side. The horizontal side would be labeled as the adjacent side. Then the diagonal side is the hypotenuse side. 2. (a) V = 103.9 m Q = 60 m     (b) M = 109.9 m P = 63 m    (c) Z = 482.3 cm W = 574.5 cm    (d) S = 1.88.4 miles R = 312.9 miles 3. (a) X = 83.82 m and the angle is equal to 17.5 (b) Y = 541.20 m and the angle is equal to 33.5 Reminder (*some answer my round up or down & you could also used the help of worksheet “Vectors and the Trig Functions Notes” pages 21-22.*) Daily Question: Then the daily question was a basic review problem based off the worksheet “Using the Trig Functions” page 23. It asked us to find hypotenuse side of the triangle and two of the angles within. If you understood as well as did the homework from 12/16/08, it should have been pretty simple. Then after going over the daily question we took a look at the handout, which you should have picked up at the beginning of class. “Vectors Problems with Trig Functions” pages 24-25. Here were a couple of problems of situations where we would use a trig function to determine the magnitude of each component. Example Problem 1: An athlete competing in the long jump pushes off from the ground at a speed of 9m/s at an angle of 35 degrees (this is the initial velocity in the 35 degrees direction). Calculate the vertical and horizontal components of the initial velocity. sine 35= x/9m/s 0.574=x/9m/s X=5.16m/s || Cosine 35=x/9m/s 0.819=x/9m/s X=7.37m/s || First your picture should look like this…
 * Then you would use this equation to find the opposite side.
 * Then you would also use this equation to find the adjacent side.

Then you continued to work on worksheet “Vector Problems with Trig Functions” pages 24-25, for the rest of the period. Assignments: Finish worksheet “Vector Problems with Trig Functions” pages 24-25 is you didn’t finish in class and don’t forget to study for test coming up