E Test: Chapter 8 Test T Question list K Find the exact value of the following expression without using a calculator. cos O Question 1 O Question 2 cos 4 =0 (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) O Question 3 O Question 4E Test: Chapter 8 Test - 2 - on [0,2x] Question 5 Question 6 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is the interval. (Type your answer in interval notation. Simplify your answer. Type an exact answer, using it as needed. Use integers or fractions for any numbers in the expression.) Question 7 O B. The solution set is { } Simplify your answer. Type an exact answer, using it as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) Question 8 O C. There is no solution.Test: Chapter 8 Test Question 12 of 12 > This test: 12 point(s) possible This question: 1 point(s) possible Question list K Find the derivative - ( - 3 sin t). d Question 5 at ( - 3 sint) = [ Question 6 Question 7 Question 8E Test: Chapter 8 Test This tes This qu Question list K By inspecting a graph of y = sin x, determine whether the graph is concave up or concave down on the interval (2 2X) O Question 1 The graph is Question 2 on the interval 2,2x) O Question 3 concave down concave up O Question 4Test: Chapter 8 Test