Edit View History Bookmarks Window Help Math 104: Trigonometry MTWTH Spring 2018

Question

Edit View History Bookmarks Window Help Math 104: Trigonometry MTWTH Spring 2018 Christopher Anderson & 1 5/1 Homework: Chapter 6 Homework: Trigonometric Equations Score: 0 of 1 pt 6.3.10 19 of 20 (11 complete) HW Score: 55 EQues The solution set for the equation (135 225" Use this information to solve the following equation over the interval o 36o) 47 cos -=- Select the correct choice below and, if necessary, il in the answer box to completo your choice O A. The solution set is (Simplity your answer. Type an exact answer, using x as needed. Use integers or fractions for any answers as needed. Do not include the degree symbol in your answer,) The solution set is OB. Click to select and enter your answer's) and then click Check Answer Clear All All parts showing Starbucks $5 for $10 Starbucks eGift Card Invite Only. Groupon Merchant FAQ I Gift Cards

Explanation / Answer

Solution:

==> cos ?/2 = -?2 / 2

==> ?/2 = cos-1(-?2 / 2) = (135°, 225°)

==> ? = (270°, 450°)

But over the interval [0°, 360°)

==> ? = 270°

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