Trắc nghiệm Tích vô hướng của hai vectơ Toán Lớp 10

A. 11

B. 23

C. 13

D. 26

A. $\hat{A} \approx 108^{\circ} 5^{\prime}$

B. $\hat{A} \approx 72^{\circ} 5^{\prime}$

C. $\hat{A} \approx 113^{\circ} 21^{\prime}$

D. $\hat{A} \approx 118^{\circ} 5^{\prime}$

A. $\hat{B} \approx 50^{\circ}$

B. $\hat{B} \approx 81^{\circ}$

C. $\hat{B} \approx 60^{\circ} 11'$

D. $\hat{B} \approx 45^{\circ} 27'$

A. $\widehat{C} \approx 55^{o} 7^{\prime}$

B. $\widehat{C} \approx 17^{o} 7^{\prime}$

C. $\widehat{C} \approx 32^{o} 7^{\prime}$

D. $\widehat{C} \approx 21^{0} 7^{\prime}$

A. $A M=\frac{\sqrt{1265}}{2}$

B. $A M=\frac{\sqrt{123}}{2}$

C. $A M=\frac{\sqrt{2022}}{2}$

D. $A M=\frac{\sqrt{1005}}{2}$

A. $B D=7\sqrt{101}$

B. $B D=9\sqrt{53}$

C. $B D=\sqrt{53}$

D. $B D=\sqrt{101}$

A. $C F=3\sqrt{13}$

B. $C F=5\sqrt{13}$

C. $C F=11\sqrt{13}$

D. $C F=\sqrt{13}$

A. $11 \sqrt{11}$

B. $4 \sqrt{11}$

C. $19 \sqrt{11}$

D. $\sqrt{11}$

A. $\frac{52 \sqrt{11}}{15}$

B. $\frac{14 \sqrt{11}}{15}$

C. $\frac{26 \sqrt{11}}{15}$

D. $\frac{117 \sqrt{11}}{15}$

A. $\frac{13 \sqrt{11}}{6}$

B. $\frac{7 \sqrt{11}}{6}$

C. $\frac{5 \sqrt{11}}{6}$

D. $\frac{13 \sqrt{11}}{6}$

A. $\frac{5 \sqrt{11}}{11}$

B. $\frac{45 \sqrt{11}}{11}$

C. $\frac{9 \sqrt{11}}{11}$

D. $\frac{17 \sqrt{11}}{11}$

A. $12 \sqrt{11}$

B. $7\sqrt{11}$

C. $41 \sqrt{11}$

D. $26 \sqrt{11}$

A. $3\sqrt 5$

B. $\sqrt{15}$

C. $\sqrt{11}$

D. 5

A. 11

B. 21

C. 5

D. 26

A. $\widehat{B} \approx 117^{2} 48^{\prime}$

B. $\widehat{B} \approx 41^{2} 48^{\prime}$

C. $\widehat{B} \approx 131^{2} 48^{\prime}$

D. $\widehat{B} \approx 108^{2} 48^{\prime}$

A. $\widehat{A} \approx 56^{\circ} 36^{\prime}$

B. $\widehat{A} \approx 33^{\circ} 36^{\prime}$

C. $\widehat{A} \approx 21^{\circ} 36^{\prime}$

D. $\widehat{A} \approx 31^{\circ} 36^{\prime}$

A. $\widehat{C} \approx 28^{\circ} 36^{\prime}$

B. $\widehat{C} \approx 33^{\circ} 36^{\prime}$

C. $\widehat{C} \approx 27^{\circ} 36^{\prime}$

D. $\widehat{C} \approx 35^{\circ} 36^{\prime}$

A. $\frac{\sqrt{155}}{2}$

B. $\frac{\sqrt{131}}{2}$

C. $\frac{\sqrt{91}}{2}$

D. $\frac{\sqrt{163}}{2}$

A. $\frac{\sqrt{59}}{2}$

B. $\frac{\sqrt{67}}{2}$

C. $\frac{\sqrt{23}}{2}$

D. $\frac{\sqrt{41}}{2}$

A. $\frac{\sqrt{235}}{2}$

B. $\frac{\sqrt{113}}{2}$

C. $\frac{\sqrt{117}}{2}$

D. $\frac{\sqrt{141}}{2}$

A. $\frac{5\sqrt{11}}{6}$

B. $\frac{7 \sqrt{11}}{6}$

C. $\frac{ \sqrt{11}}{6}$

D. $\frac{3 \sqrt{11}}{6}$

A. $\frac{3 \sqrt{11}}{2}$

B. $\frac{ \sqrt{11}}{2}$

C. $\frac{3 \sqrt{11}}{11}$

D. $\frac{ \sqrt{11}}{6}$

A. $\frac{21 \sqrt{11}}{10}$

B. $\frac{ \sqrt{11}}{2}$

C. $\frac{ \sqrt{11}}{11}$

D. $\frac{ \sqrt{11}}{6}$

A. $\frac{3 \sqrt{11}}{11}$

B. $\frac{15 \sqrt{11}}{11}$

C. $\frac{ \sqrt{3}}{11}$

D. $\frac{5 \sqrt{3}}{11}$

A. $\frac{\sqrt{109}}{2}$

B. $\frac{5\sqrt{3}}{2}$

C. $\frac{\sqrt{17}}{2}$

D. $\frac{\sqrt{11}}{2}$

A. $\frac{3 \sqrt{7}}{4}$

B. $\frac{2 \sqrt{3}}{4}$

C. $\frac{21 \sqrt{11}}{4}$

D. $\frac{21 \sqrt{13}}{4}$

A. $\frac{\sqrt 3}{2}$

B. $13$

C. $\frac{19}{2}$

D. $\frac{21}{2}$

A. $\hat{A} \approx 50^{\circ} 42^{\prime}$

B. $\hat{A} \approx 45^{\circ} 42^{\prime}$

C. $\hat{A} \approx 90^{\circ} 42^{\prime}$

D. $\hat{A} \approx 32^{\circ} 42^{\prime}$

A. $\widehat{B} \approx 117^{\circ} 42^{\prime}$

B. $\widehat{B} \approx 37^{\circ} 42^{\prime}$

C. $\widehat{B} \approx 95^{\circ} 42^{\prime}$

D. $\widehat{B} \approx 101^{\circ} 42^{\prime}$

A. $\widehat{C} \approx 41^{\circ} 36^{\prime}$

B. $\widehat{C} \approx 33^{\circ} 36^{\prime}$

C. $\widehat{C} \approx 89^{\circ} 36^{\prime}$

D. $\widehat{C} \approx 13^{\circ} 36^{\prime}$

A. $A M=\frac{\sqrt{95}}{2}$

B. $A M=\frac{\sqrt{101}}{2}$

C. $A M=\frac{\sqrt{47}}{2}$

D. $A M=\frac{\sqrt{41}}{2}$

A. $B D=\frac{\sqrt{41}}{2}$

B. $B D=\frac{\sqrt{17}}{2}$

C. $B D=\frac{\sqrt{37}}{2}$

D. $B D=\frac{\sqrt{31}}{2}$

A. $C F=\frac{\sqrt{7}}{2}$

B. $C F=\frac{\sqrt{11}}{2}$

C. $C F=\frac{\sqrt{2}}{2}$

D. $C F=\frac{\sqrt{5}}{2}$

A. $\frac{\sqrt{115}}{3}$

B. $\frac{\sqrt{321}}{4}$

C. $\frac{\sqrt{455}}{6}$

D. $1$

A. $\frac{\sqrt{13}}{5}$

B. $\frac{\sqrt{455}}{8}$

C. $\frac{\sqrt{147}}{11}$

D. $\frac{\sqrt{111}}{8}$

A. $\frac{\sqrt{109}}{12}$

B. $\frac{\sqrt{31}}{12}$

C. $\frac{5\sqrt{3}}{12}$

D. $\frac{\sqrt{455}}{12}$

A. $\frac{72 \sqrt{455}}{455}$

B. $\frac{72 \sqrt{31}}{31}$

C. $\frac{ \sqrt{31}}{31}$

D. $\frac{21 \sqrt{133}}{133}$

A. $p=7$

B. $p=6$

C. $p=\frac{13}{2}$

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

A. $\frac{\sqrt{135}}{11}$

B. $\frac{\sqrt{455}}{4}$

C. $\frac{\sqrt{71}}{3}$

D. $\frac{\sqrt{109}}{4}$

A. $\frac{\sqrt{455}}{26}$

B. $\frac{\sqrt{31}}{26}$

C. $\frac{\sqrt{107}}{26}$

D. $\frac{\sqrt{113}}{26}$

A. $\hat{A} \approx 14^{\circ} 24^{\prime}$

B. $\hat{A} \approx 33^{\circ} 24^{\prime}$

C. $\hat{A} \approx 51^{\circ} 24^{\prime}$

D. $\hat{A} \approx 26^{\circ} 24^{\prime}$

A. $\hat{B} \approx 36^{\circ} 18^{\prime}$

B. $\hat{B} \approx 22^{\circ} 18^{\prime}$

C. $\hat{B} \approx 88^{\circ} 18^{\prime}$

D. $\hat{B} \approx 46^{\circ} 18^{\prime}$

A. $\widehat{C} \approx 117^{\circ} 18^{\prime}$

B. $\widehat{C} \approx 13^{\circ} 18^{\prime}$

C. $\widehat{C} \approx 109^{\circ} 18^{\prime}$

D. $\widehat{C} \approx 201^{\circ} 18^{\prime}$

A. $\frac{\sqrt{401}}{2}$

B. $\frac{\sqrt{13}}{2}$

C. $\frac{\sqrt{21}}{2}$

D. $\frac{\sqrt{129}}{2}$

A. $\frac{\sqrt{11}}{2}$

B. $\frac{\sqrt{21}}{2}$

C. $1$

D. $\frac{\sqrt{13}}{2}$

A. $\frac{\sqrt{201}}{2}$

B. $\frac{\sqrt{103}}{2}$

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

D. $\sqrt 3$

A. $\frac{ \sqrt{3}}{7}$

B. $\frac{13 \sqrt{3}}{7}$

C. $1$

D. $\frac{20 \sqrt{3}}{7}$

A. $\frac{ \sqrt{3}}{2}$

B. $\frac{5 \sqrt{3}}{2}$

C. $\frac{11 \sqrt{3}}{2}$

D. $\frac{7 \sqrt{3}}{2}$

A. $4 \sqrt{3}$

B. $11 \sqrt{3}$

C. $1$

D. $3 \sqrt{3}$

A. $3\sqrt{3}$

B. $3$

C. $\sqrt{3}$

D. $10\sqrt{3}$