Trắc nghiệm Tỉ số lượng giác của góc nhọn có đáp án

A. $\tan C=\frac{1}{4}$

B. tan C = 4

C. tan C = 2

D. tan C = $\frac{1}{2}$

A. tan C = $\frac{1}{4}$

B. tan C = 4

C. tan C = 2

D. tan C= $\frac{1}{2}$

A. cos C $\approx$ 0,76

B. cos C $\approx$ 0,77

C. cos C $\approx$ 0,75

D. cos C $\approx$ 0,78

A. AC = 11,53; BC = 7,2

B. AC = 7; BC $\approx$ 11,53

C. AC = 5,2; BC $\approx$ 11

D. AC = 7,2; BC $\approx$ 11,53

A. $\sin \alpha =\frac{\sqrt{21}}{25};cot\alpha =\frac{3\sqrt{21}}{21}$

B. $\sin \alpha =\frac{\sqrt{21}}{5};cot\alpha =\frac{5}{\sqrt{21}}$

C. $\sin \alpha =\frac{\sqrt{21}}{3};cot\alpha =\frac{3}{\sqrt{21}}$

D. $\sin \alpha =\frac{\sqrt{21}}{5};cot\alpha =\frac{2}{\sqrt{21}}$

A. $\sin \alpha =\frac{4}{\sqrt{7}};\tan \alpha =\frac{\sqrt{7}}{3}$

B. $\sin \alpha =\frac{\sqrt{7}}{4};\tan \alpha =\frac{3}{\sqrt{7}}$

C. $\sin \alpha =\frac{\sqrt{7}}{4};\tan \alpha =\frac{\sqrt{7}}{3}$

D. $\sin \alpha =\frac{\sqrt{7}}{3};\tan \alpha =\frac{\sqrt{7}}{4}$

A. sin20 ^o < sin70 ^o

B. sin20 ^o > sin70 ^o

C. sin20 ^o = sin70 ^o

D. sin20 ^o $\ge$ sin70 ^o

A. cot46 ^o = cot50 ^o

B. cot46 ^o > cot50 ^o

C. cot46 ^o < cot50 ^o

D. cot46 ^o $\ge$ cot50 ^o

A. cot 71 ^o < cot 69 ^o 15’< tan 28 ^o < tan 38 ^o < tan 43 ^o

B. cot 69 ^o 15’< cot 71 ^o < tan 28 ^o < tan 38 ^o < tan 43 ^o

C. tan 28 ^o < tan 38 ^o < tan 43 ^o < cot 69 ^o 15’< cot 71 ^o

D. cot 69 ^o 15’< tan 28 ^o < tan 38 ^o < tan 43 ^o < cot 71 ^o

A. cos 67 ^o < sin 35 ^o < sin 28 ^o 10’< sin 40 ^o < cos 44 ^o 35’

B. cos 67 ^o < cos 44 ^o 35’< sin 40 ^o < sin 28 ^o 10’< sin 35 ^o

C. cos 67 ^o > sin 28 ^o 10’> sin 35 ^o > sin 40 ^o > cos 44 ^o 35’

D. cos 67 ^o < sin 28 ^o 10’< sin 35 ^o < sin 40 ^o < cos 44 ^o 35’

A. 0

B. 8

C. 5

D. 4

A. 0

B. 1

C. 2

D. 3

A. C = $1-2{\sin }^2\alpha .{\cos }^2\alpha$

B. C=1

C. $C={\sin }^2\alpha .{\cos }^2\alpha$

D. $C=1+2{\sin }^2\alpha .{\cos }^2\alpha$

A. $C=1-3{\sin }^2\alpha .{\cos }^2\alpha$

B. C=1

C. $C={\sin }^2\alpha .{\cos }^2\alpha$

D. $C=3{\sin }^2\alpha .{\cos }^2\alpha -1$

A. $P={\sin }^2\alpha$

B. $P={\cos }^2\alpha$

C. $P={\tan }^2\alpha$

D. $P=2{\sin }^2\alpha$

A. $Q=cot\alpha -\tan \alpha$

B. $Q=cot\alpha +\tan \alpha$

C. $Q=\tan \alpha -cot\alpha$

D. $Q=2\tan \alpha$

A. G=1

B. $G=-\frac{4}{5}$

C. $G=-\frac{6}{5}$

D. G=-1

A. $P=\frac{7}{8}$

B. $P=\frac{17}{8}$

C. $P=\frac{8}{7}$

D. $P=\frac{5}{8}$

A. 3

B. 5

C. $\frac{3}{5}$

D. $\frac{5}{3}$

A. $cot\alpha =\frac{12}{5}$

B. $cot\alpha =\frac{11}{5}$

C. $cot\alpha =\frac{5}{12}$

D. $cot\alpha =\frac{13}{5}$

A. $\cos \alpha =\frac{3}{4};\tan \alpha =\frac{3}{4};cot\alpha =\frac{4}{5}$

B. $\cos \alpha =\frac{4}{5};\tan \alpha =\frac{3}{4};cot\alpha =\frac{4}{3}$

C. $\cos \alpha =\frac{4}{5};\tan \alpha =\frac{3}{4};cot\alpha =\frac{4}{5}$

D. $\cos \alpha =\frac{3}{4};\tan \alpha =\frac{4}{5};cot\alpha =\frac{4}{3}$

A. B = 44

B. B = 1

C. B = 45

D. B = 2

A. B = 44

B. B = 1

C. B = 45

D. B = 2

A. B > 0

B. B < 0

C. 0 < B < 1

D. B = 1

A. $\sin A=\frac{120}{169}$

B. $\sin A=\frac{60}{169}$

C. $\sin A=\frac{5}{6}$

D. $\sin A=\frac{10}{13}$

A. 139,3cm ²

B. 129,6cm ²

C. 116,5cm ²

D. 115,8cm ²

A. $\alpha ={30}^{°}$

B. $\alpha ={45}^{°}$

C. $\alpha ={60}^{°}$

D. $\alpha ={120}^{°}$

A. A=0

B. $A=\frac{7}{2}$

C. $A=-\frac{7}{2}$

D. $A=\frac{5}{2}$

A. -4

B. 4

C. $-\frac{3}{2}$

D. $\frac{3}{2}$