Differentiation(Q10): a) 1/3PIx^2 d) Minimum = 120m c) x = 16.63... => f''(x) = 0.437 > 0
Trig identities: a) Theta = 8/15Pi , -2/15Pi b) x = 194.5, 345.5
Circle: a) root(34) c) 3x + 5x - 95 = 0
Log: i) (a - 5)/9 ii) -2.19
For the trig I used both a cast diagram and a sin graph to help me answer it, will that be accepted? I got the answer right but i didnt make it obvious that i used CAST