gaokao 2025 Q5

gaokao · China · national-II 5 marks Sine and Cosine Rules Find an angle using the cosine rule

In $\triangle ABC$, $BC = 2$, $AC = 1 + \sqrt{3}$, $AB = \sqrt{6}$, then $A = $ ( )
A. $45°$
B. $60°$
C. $120°$
D. $135°$

In $\triangle ABC$, $BC = 2$, $AC = 1 + \sqrt{3}$, $AB = \sqrt{6}$, then $A = $ ( )\\
A. $45°$\\
B. $60°$\\
C. $120°$\\
D. $135°$