I assume you only want the length of the cable going down the hill.
Make a sketch.
On mine I have a triangle with sides 100 and 95 with an angle of 102 degrees between them.
The cosine law is just screaming at you here.
x^2 = 100^2 + 95^2 - 2(100)(95)cos102
= ....
you do the button-pushing.
careful with the last term, since cos102 is negative, you will be adding it.
A 100 foot tall antenna sits part way up a hill. The hill makes an angle to 12 degrees with the horizontal. In other words, if you were going to walk up the hill, you would walk at an angle of 12 degrees. To keep the antenna stable, it must be anchored by 2 cables.The distance from the base of the antenna to the down point DOWN hill is 95 feet.Ignore the amount of cable needed to fasten the cable to the antenna or to the tie downs. How much cable is needed?
Please Draw and label if you can or give me the idea of this question.
1 answer
1 answer