The Student Room Group
Reply 1
try drowing a tringle diagram
then use sign rule
so sinx/6=sin36/4
so x =61.8
61.8+36=97.8
angel of tringles total is 180
so 180-97.8=82.2 this is one possible value
but also x can be 180 -61.8=118.2 *they have same sin value *lies in the second qurtile(sp?)
so 118.2+36=154.2
total of angels of tringle is 180
so 180-154.2=25.8 :smile: