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Construction workers planned to secure a tall pole using two cables attached to the pole at a point 12 meters above ground. 

what is the total legth of the cable ? 

 

please round to the nearest tenth

 

Theres a triangle inside theres a pole that measures  12 meters on one side of it in the inside there is 45 degree angle on the other side in the inside theres is a 30 degree angle.

 

it is a triangle 

 Feb 7, 2019
edited by Guest  Feb 7, 2019
 #1
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We need to know the angle of the    wires to the ground    or wires to the pole   to figure this one ,,,,,   cheeky

 Feb 7, 2019
 #2
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Theres a triangle inside theres a pole that measures  12 meters on one side of it in the inside there is 45 degree angle on the other side in the inside theres is a 30 degree angle.

boominA  Feb 7, 2019
 #3
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OK..... you have two RIGHT triangles

 

sine = opp / hypotenuse        (this assumes the angles you gave me are the angles the cables make with the ground)

            =    12/hyp

sine 30 = 12/hyp

.5 = 12/hyp              hyp = 24  for one side

 

the OTHER side

sin 45 = 12/hyp           hyp = 16.97                          total = 24 + 16.97 = 40.97 m

 

 

 

 

Sorry ....I edited this several times !!cheeky

 Feb 7, 2019
edited by ElectricPavlov  Feb 7, 2019
edited by ElectricPavlov  Feb 7, 2019
edited by ElectricPavlov  Feb 7, 2019
 #4
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Thank you and your assumption was correct. smiley

boominA  Feb 7, 2019

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