In △ ABC, a = x, B = 2, B = 45 °, if the triangle has two solutions, then the value range of X is () A. x>2B. x<2C. 2<x<22D. 2<C<23

In △ ABC, a = x, B = 2, B = 45 °, if the triangle has two solutions, then the value range of X is () A. x>2B. x<2C. 2<x<22D. 2<C<23

If a ≤ 45 °, then C ≥ 90 ° so that a + b > 180 ° does not hold. If a = 90, then the complementary angle is also 90 °, so 22 < Sina < 1A = 22sina, so 2 < a < 22, so C is selected