Question

Cho góc nhọn $\alpha$. So sánh:

a) $\sin 35^\circ$ và $\tan 37^\circ$.

b) $\cos 40^\circ$ và $\tan 55^\circ$.

Answer 1

sin 35 > tan 37

cos 40 < tan 55

Answer 2

 \(a.sin35^o< sin37^o< tan37^o\)

\(b.cos40^o< cot40^o=tan50^o< tan55^o\)

Answer 3

a)<

b)<

Answer 4

a) sin 35 > tan 37
b) cos 40 < tan 55

Answer 5

a) sin 35° < tan 37° 

b) cos 40° = tan 55° 

Answer 6

a, sin 35 < tan 37

b, cos 40 < tan 55

Answer 7

a)sin 35

Answer 8

a) sin 35°< tan 37^°

Answer 9

Answer 10

a) sin 35 > tan 37

b)cos 40> tan 55

Answer 11

a, sin 35^o < tan 37^o

b, cos 40^o < tan 55^o

Answer 12

a)\(sin35^o< tan37^o\) 

b)\(cos40^o< tan55^0\)

Answer 13

a, sin \(35^o\)< tan \(37^o\)

b, cos \(40^o\) < tan \(55^o\)

Answer 14

a)sin 35^o < tan 37^o

b) cos 40^o < tan 55^o

Answer 15

Answer 16

sin 35 < tan 37

cos 40 > tan 55

Answer 17

a) \sin 35^\circ < \sin 37^\circ < \tan 37^\circsin35∘<sin37∘<tan37∘.

b) \cos 40^\circ < \cot 40^\circ = \tan 50^\circ < \tan 55^\circcos40∘<cot40∘=tan50∘<tan55∘.

 

Answer 18

a,sin 35^o<sin 37^o<tan 37^o

b, cos 40^o<cot 40^o=tan 50^o<tan 55^o

Answer 19

Answer 20

Answer 21

Answer 22

a) \sin 35^\circ < \sin 37^\circ < \tan 37^\circsin35∘<sin37∘<tan37∘

b) \cos 40^\circ < \cot 40^\circ = \tan 50^\circ < \tan 55^\circcos40∘<cot40∘=tan50∘<tan55∘

 

Answer 23

Answer 24

a) \sin 35^\circ < \sin 37^\circ < \tan 37^\circsin35∘ < sin37∘ < tan37

b) $\cos 40<\tan 55$
.

Answer 25

a: sin 35 < sin 37 < tan 37

b:cos 40 < cot 40 = tan 50 < tan 55

Answer 26

Nếu $\alpha$ là góc nhọn thì $\sin \alpha <\tan \alpha ,$ $\cos \alpha <\cot \alpha$

a) $\sin {35}^{\circ }<\sin {37}^{\circ }<\tan {37}^{\circ }$

b) $\cos {40}^{\circ }<\cot {40}^{\circ }=\tan {50}^{\circ }<\tan {55}^{\circ }$

Answer 27

Chú ý : nếu α là góc nhọn thì sinα ≤ tan α , cos α ≤ cot α

a ) sin 35∘ ≤ sin 37∘ < tan 37∘

b ) cos 40∘ < cot 40∘ = tan 50∘ < tan 55∘

Answer 28

Answer 29

Answer 30