Find all real numbers that satisfy the equation. cos x = - 1 Use the smallest no

Question

Find all real numbers that satisfy the equation. cos x = - 1 Use the smallest nonnegative arcs for the solution set. Select the correct answer below, and it necessary, fill in the answer box(es) to complete your choice. A. The solution set is {x|x = middot k pi}, where k is any integer. (Type your answer in radians. Type an exact answer, using pi as needed. Use integers or fractions for any numbers in the expression.) B. The solution set is {x|x = middot 2k pi}. where k is any integer. (Type your answer in radians. Type an exact answer, using pi as needed. Use integers or tractions for any numbers in the expression.) C. The solution set is {x|x = + 2k pi or + 2k pi}, where k is any integer. (Type your answer in radians. Type an exact answer, using pi as needed. Use integers or fractions for any numbers in the expression. Use ascending order. D. There is no solution

Explanation / Answer

cos x=-1

x=cos-1(-1)

x=2 pi k + pi , x=2pi k -pi

And that's the solution set .

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