Inactive Tutor answered 11/22/21
Tutor
New to Wyzant
arc cosines can only have values from 0 to π.
As cos(5π/4) = cos(3π/4), the solution to this problem is 3π/4
Melissa M.
asked 11/22/21cos-1(cos 5π ÷ 4) =5π÷4 is false
Inactive Tutor answered 11/22/21
arc cosines can only have values from 0 to π.
As cos(5π/4) = cos(3π/4), the solution to this problem is 3π/4
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