The value is 0.
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They are true statements about trigonometric ratios and their relationships irrespective of the value of the angle.
sin(90°) = 1 cos(90°) = 0 tan(90°) = ∞ sec(90°) = ∞ csc(90°) = 1 cot(90°) = 0
Sin(90)= 1.000 Cos(0) = 1.000 Tan(45) = 1.000 NB The angular values repeat every 360 degrees.
cos(22) is a trigonometric ratio and, if the angle is measured in degrees, its value is 0.9272
Use the trigonometric relations and identities.