Quandaries
and Queries 

Joy Student Secondary Level Questions How do you solve this? Do you solve this triangle using the law of sines of the law of cosines? (ASA) A=120DEG. B=40DEG c=35 cm I keep getting different answers. 

Hi Joy, To use the law of cosines you need to know the lengths of two sides. Since the sum of the angles in a triangle is 180 degrees you know that the measure of angle C is 20 degrees. Thus
so
Now do the same to solve for b. I got b = 65.78 cm. Penny 

