SEARCH HOME
Math CentralQuandaries & Queries

search

Question from raneem, a student:

ABC is a triangle in which : BC=20cm. M(<B) =29 and m(<C)=73 . D is the midpoint of BC
Find the length Of AB and AD approximated to 2 decimal places

Raneem,

Since the sum of the measures of the interior angles of a triangle is 180 degrees you can calculate the measure of the angle at A. I would then apply the Law of Sines to triangle ABC and then the Law of Cosines to triangle ADB.

Penny

About Math Central
 

 


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.
Quandaries & Queries page Home page University of Regina PIMS