Taylor built a fence around her yard. the fence was 210 feet long. she put a fence post in the ground at the start of the fence and another fence post every 312 feet. taylor paid $8.50 for each fence post. how much did she spend for all the fence posts she used?

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12