16. If the range of the exponential function f(x) = a(7)² + c is the set {y € Ry<9}, which of the following values of a is NOT admissible? A. a = -1 B. a = -2 C. a = -3 D. a = 4. 17. If cotx = - and is in quadrant II, then B. cos x = - C. sinx= Z D. cos x = A. sin x =

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A: Given,

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A: Given: ×3675821286

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A:

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A: