+0  
 
0
120
3
avatar+1685 

 

Determine the sine of ∠A.

 

A) 12/13

B) 12/5

C) 5/12

D) 5/13

E) 13/12

 

 

 

Farmer Brown has the plot of land shown in the picture. He needs to fence it in for his cows to be able to graze there. How much fencing does he need (round to 3 decimal places)?

 

A) 274.185 feet

B) 285.185 feet

C) 300.158 feet

D) 533.158 feet

E) 965.158 feet

 Dec 4, 2019
edited by macabresubwoofer  Dec 4, 2019
 #1
avatar+109401 
+1

sin A   =    opposite side to A  /  hypotenuse

 

Can you find the answer  ????

 

cool cool cool

 Dec 4, 2019
 #3
avatar+1685 
0

Answer: 12/13

 

Solution: 12/13. The sine of the acute angle of a right triangle is the opposite side divided by the hypotenuse.

macabresubwoofer  Dec 5, 2019
 #2
avatar+109401 
+2

The perimeter   is   

 

15  +  (125 - 15 - 11)  = 15 + 99  =  114 ft

 

Plus

 

pi * 11   ft

 

Plus

 

99 ft

 

Plus

 

sqrt  ( 15^2 + 22^2)  ft

 

So  we have

 

114  + pi * 11  +  99 +  sqrt (15^2 + 22^2)   =

 

274.185 ft

 

 

cool cool cool

 Dec 4, 2019
edited by CPhill  Dec 4, 2019

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