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A \(\sin x > 0\)

B \(\cos x < 0\)

C \(\tan x > 0\)

D \(\cot x > 0\)

A \(\cos x < 0\) 

B \(\sin x < 0\)

C \(\tan x > 0\)

D \(\cot x > 0\)

A \(1rad = {1^0}\)

B \(1rad = {180^0}\)

C \(1rad = {\left( {\dfrac{{180}}{\pi }} \right)^0}\)

D \(1rad = {60^0}\)

A \(\dfrac{{ - 5}}{{13}};{\text{ }}\dfrac{2}{3}\)

B \(\dfrac{2}{3};\dfrac{{ - 5}}{{12}}\)

C \(\dfrac{{ - 5}}{{13}};{\text{ }}\dfrac{5}{{12}}\)

D \(\dfrac{5}{{13}};{\text{ }}\dfrac{{ - 5}}{{12}}\)

A \(n-p\)

B \(m + p\)

C \(m-p\)

D \(n + p\)

A \(m\) 

B \(n\)

C \(p\)

D \(m + n\)

A \(\dfrac{1}{2}\)

B \(\dfrac{{ - 1}}{2}\)

C \(1\) 

D \(3\)

A (I)

B (II)

C (III)

D (IV)

A \(\dfrac{7}{4}\)

B \(\dfrac{1}{4}\)

C \(7\)

D \(\dfrac{{13}}{4}\)

A \(4\)

B \(3\)

C \(2\)

D \(1\)

A \(\sin \left( {\dfrac{\pi }{2} + \alpha } \right) > 0\)

B \(\sin \left( {\dfrac{\pi }{2} + \alpha } \right) \geqslant 0\)

C \(\sin \left( {\dfrac{\pi }{2} + \alpha } \right) < 0\)

D \(\sin \left( {\dfrac{\pi }{2} + \alpha } \right) \leqslant 0\)

A \(\sin \left( {\dfrac{{5\pi }}{2} - \alpha } \right) < 0\)

B \(\sin \left( {\dfrac{{5\pi }}{2} - \alpha } \right) > 0\)

C \(\sin \left( {\dfrac{{5\pi }}{2} - \alpha } \right) = 0\)

D Cả ba đáp án đều sai

A \(\tan \alpha  = \dfrac{{ - \sqrt 2 }}{4}\)

B \(\tan \alpha  =  - 2\sqrt 2 \)

C  \(\tan \alpha  = 2\sqrt 2 \)

D \(\tan \alpha  = \dfrac{{\sqrt 2 }}{4}\)

A \(\cot \alpha  = \dfrac{{2\sqrt 5 }}{5}\)

B \(\cot \alpha  = 2\sqrt 5 \)

C \(\cot \alpha  =  - 2\sqrt 5 \)

D \(\cot \alpha  = \dfrac{{ - 2\sqrt 5 }}{5}\)

A \(2\)

B \(1 + \tan\alpha \)

C \(\dfrac{1}{{{\text{co}}{{\text{s}}^2}\alpha }}\)

D \(\dfrac{1}{{{{\sin }^2}\alpha }}\)

A \(A < 0\)

B \(A = 0\)

C \(A > 0\)

D \(A = 1\)

A \(2\)

B \( - 2\)

C \(3\)

D \( - 3\)

A \(10\)

B \(4\)

C \(\dfrac{{11}}{2}\)

D \(\dfrac{3}{2}\)