+0  
 
0
230
1
avatar

In ΔSTU, s = 6.1 cm, t = 3.2 cm and u=7.4 cm. Find the measure of ∠S to the nearest 10th of a degree.

 Dec 14, 2020
 #1
avatar+117546 
+1

We can use the Law of Cosines to solve this

 

(6.1^2  - 3.2^2  - 7.4^2)  / (-2 * 3.2 * 7.4)  =  cos S

 

To find S   we  have  that

 

arccos  [  (6.1^2  - 3.2^2  - 7.4^2)  / (-2 * 3.2 * 7.4)  ]   =  S   ≈ 54.1° 

 

 

cool cool cool

 Dec 14, 2020

76 Online Users

avatar
avatar
avatar
avatar
avatar