Question Solve the equation x={3π+2kπ35π+2kπ,k∈ZAlternative Form x={60∘+360∘k300∘+360∘k,k∈ZAlternative Form x≈{1.047198+2kπ5.235988+2kπ,k∈Z Evaluate cos(x)=21Use the inverse trigonometric function x=arccos(21)Calculate x=3πx=35πAdd the period of 2kπ,k∈Z to find all solutions x=3π+2kπ,k∈Zx=35π+2kπ,k∈ZSolution x={3π+2kπ35π+2kπ,k∈ZAlternative Form x={60∘+360∘k300∘+360∘k,k∈ZAlternative Form x≈{1.047198+2kπ5.235988+2kπ,k∈Z Show Solution Graph
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