Find the exact value of each of the remaining trignometric function of x
cos x = -3/5, x in quadrant III
+118725 I did one like this just recently.
3rd quad
cosx=-3/5
sinx=-4/5
tanx=4/3
cos is adj/hyp = 3/5
so opp must be 4
it is the third quad so sine, cos, sec and cosec are negative and tan and cot are positive.
I haven't explained it brilliantly I know that but maybe you understand. 
+118725 I did one like this just recently.
3rd quad
cosx=-3/5
sinx=-4/5
tanx=4/3
cos is adj/hyp = 3/5
so opp must be 4
it is the third quad so sine, cos, sec and cosec are negative and tan and cot are positive.
I haven't explained it brilliantly I know that but maybe you understand.
