Question: Question 4 > If sec(x) = OT -J (in Quadrant-1), find cos(2x) = (Please enter answer accurate to 4 decimal places.) Submit QuestionConsider the trigonometric

Question 4 > If sec(x) = OT -J (in Quadrant-1), find cos(2x) = (Please enter answer accurate to 4 decimal places.) Submit QuestionConsider the trigonometric function f (x) = - 2 cos(4x). determine its amplitude and period. Leave answers in exact form; type pi for . a) amplitude =

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