1.

All the pairs (x, y) that satisfy the inequality \({2^{\sqrt {{\rm{si}}{{\rm{n}}^2}{\rm{x}} - 2{\rm{sinx}} + 5} }}\cdot\frac{1}{{{4^{{\rm{si}}{{\rm{n}}^2}{\rm{y}}}}}} \le 1\) also satisfy the equation:

A. 2|sin x| = 3sin y
B. 2sin x = sin y
C. sin x = 2sin y
D. sin x = |sin y|
Answer» E.


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