For_a_discharge_of_triangular_weirs_with_notch_angle____________the_formula_is_0.685_h2.45.$

For_a_discharge_of_triangular_weirs_with_notch_angle____________the_fo

1.	For_a_discharge_of_triangular_weirs_with_notch_angle____________the_formula_is_0.685_h^2.45.$
A.	90<sup>o</sup>
B.	60<sup>o</sup>
C.	30<sup>o</sup>
D.	45<sup>o</sup>
Answer» D. 45<sup>o</sup>