Urgent need ! a lamppost, cab, bent at point a after a storm. the tip of the lamppost touched the ground at point c, as shown below: triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet. what is the height, in feet, of the portion ab of the lamppost? 20 divided by tan 55 degrees 20 cos 55° 20 tan 55° 20 divided by cos 55 degrees

Check out the attached image. the solid lines are the lamp post broken into two parts (ab and ac). the dotted line is the ground.  angle c is the reference angleangle c = 55 degreeswith respect to angle c, we don't know the opposite side ab. call this x.we know the adjacent side is 20 ft. so bc = 20use the tangent rule and solve for x.  tan(angle) = opposite/adjacenttan(c) = ab/bctan(55) = x/20x = 20*tan(55)answer: ab is exactly 20*tan(55) feet long

The answer is a