Saturday
April 19, 2014

Homework Help: math

Posted by Anonymous on Wednesday, March 20, 2013 at 10:46pm.

Draw a big diagram

You end up with a triangle with:

the horizontal side = 47 ft

the side representing the leaning pole ... call it a

and the angle opposite the pole side = 51



The pole makes an angle of 7 with the vertical ... so the angle between to pole side and the 47ft side = 90 - 7 = 83

So that make the angle opposite the 47 ft side = 180 - (51 + 83) = 46


Now you can use the sine rule to find the length of the pole:

a/sin51 = 47/sin46

a = 47 * sin51 / sin46

a = 50.8 ft

so the length of the pole is 50.8 ft

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