Looking for solutions of these two

Boss Apr 2016 2 0 Somewhere in the east... Apr 10, 2016 #1 Looking for solutions of these two Last edited: Apr 10, 2016

Prove It MHF Helper Aug 2008 12,897 5,001 Apr 10, 2016 #2 In the second, use the Sine Rule to evaluate angle B. This will be enough information to get angle C. Then you can use the Sine Rule to evaluate AB.

In the second, use the Sine Rule to evaluate angle B. This will be enough information to get angle C. Then you can use the Sine Rule to evaluate AB.

skeeter MHF Helper Jun 2008 16,217 6,765 North Texas Apr 10, 2016 #3 For the 1st problem ... AO, BO, and CO (sketch it in) are all angle bisectors. Angle BCO = 60 degrees, therefore angle OAB + angle OBA = 30 degrees $\implies$ angle AOB = 150 degrees Use the cosine law with triangle AOB to determine AB Last edited: Apr 11, 2016

For the 1st problem ... AO, BO, and CO (sketch it in) are all angle bisectors. Angle BCO = 60 degrees, therefore angle OAB + angle OBA = 30 degrees $\implies$ angle AOB = 150 degrees Use the cosine law with triangle AOB to determine AB