o Take a TestWil McDowell Google Chrome b Secure httpswwwmat

o Take a Test-Wil McDowell Google Chrome b Secure https://www.mathxl.com/Student/playerTest.aspx?testld 155284514&centerwin; yes Math 123 Spring 2017 TTh Section 3 Quiz: Practice Test 2 12 of 21 (9 complete) This Question: 1 pt Use the unit circle, along with the definitions of the circular functions, to find the ,in cos tan exact values for the given functions when s E- sin 2 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) O B. The solution is undefined. Select the correct choice below and fill in any answer boxes in your choice. O A. (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) O B. The solution is undefined. What is the value of tan O A- 1 O C. The solution is undefined O D. o vi r. More Click to select your answer

Solution

Solution:

Sin(-/2)

If y = sin(-x), then y = -sin(x)

So

Sin(-/2) = - sin(/2) = -1

Cos(-/2)

If y = cos(-x), then y = cos(x)

So

Cos(-/2) = Cos(/2) = 0

Tan(-/2)

Because tanx = sinx/cosx and cos(-/2) = 0. Division by zero error since division by zero is undefined.