20  30 130, a trigonometric solution
Community Mathematics Centre, CoMaC (2016) 20  30 130, a trigonometric solution. At Right Angles, 5 (1). pp. 6870. ISSN 25821873
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Abstract
The problem we study in this short note belongs to an extremely interesting class of geometrical problems. Typically, they deal with triangles with many lines drawn within them, intersecting at angles whose measures are an integer number of degrees. We are required to find the measure of some indicated angle. A common feature of these problems is that solutions using only pure geometry are difficult to find (though not impossible), and one is forced to fall back upon trigonometry
Item Type:  Articles in APF Magazines  

Authors:  Community Mathematics Centre, CoMaC  
Document Language: 


Uncontrolled Keywords:  Integer degree, Sine rule, Complementary angle, Supplementary angle  
Subjects:  Natural Sciences > Mathematics  
Divisions:  Azim Premji University > University Publications > At Right Angles  
Full Text Status:  Public  
URI:  http://publications.azimpremjiuniversity.edu.in/id/eprint/3117  
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