A.present-day
B.up-to-date
C.inform
D.out-of-date

A.grieving
B.complaining
C.lamenting
D.moaning

A.confided
B.intimated
C.disclosed
D.confessed

A.bother
B.social
C.slightly
D.towards

A.94
B.95
C.96
D.Vô số

A.\(\tan \dfrac{{13\pi }}{{12}} =  - 2 - \sqrt 3 \)
B.\(\tan \dfrac{{13\pi }}{{12}} =  - 2 + \sqrt 3 \)
C.\(\tan \dfrac{{13\pi }}{{12}} = 2 + \sqrt 3 \)
D.\(\tan \dfrac{{13\pi }}{{12}} = 2 - \sqrt 3 \)

A.\( - \dfrac{{\sqrt 3 }}{3}\)
B.\(\dfrac{{\sqrt 3 }}{3}\)
C.\( - \sqrt 3 \)
D.\(\sqrt 3 \)

A.\(\dfrac{{\sqrt 3 }}{2}\)
B.\(1\)
C.\( - 1\)
D.\( - \dfrac{{\sqrt 3 }}{2}\)

A.\(8\cos 20^\circ \)
B.\(4\cos 20^\circ \)
C.\(4\sin 20^\circ \)
D.\(8\sin 20^\circ \)

A.\(\dfrac{{48 + 25\sqrt 3 }}{{11}}\)
B.\(\dfrac{{8 - 5\sqrt 3 }}{{11}}\)
C.\(\dfrac{{8 - \sqrt 3 }}{{11}}\)
D.\(\dfrac{{48 - 25\sqrt 3 }}{{11}}\)