A 10-meter telephone pole casts a 17-meter shadow directly down a slope when the angle of elevation of the sun is 42o (see figure).  Find θ, the angle of elevation of the ground (to the nearest tenth of a degree).  (A calculator is needed for this problem

Guest Feb 27, 2017

1+0 Answers


Here is a quick sketch of my answer:  

error   14 m should be 17m

sin 138/17  = sin y /11.106     y = 25.92 degrees

slope =  42 - 25.92 = 16.1 degree slope

ElectricPavlov  Feb 27, 2017
edited by ElectricPavlov  Feb 27, 2017

12 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details