75 or 99! said:
did anyone else not have enuf time to do question 7 and what the f was with the inverse functions/simultaneously equation question did anyone else go around in circles?
Yeh i also ran out of time with q7, and the last part of the projectile motion q, the wording confused me- "Show that, if the paintball passes through the hole,
the range is"- yeh the bit in bold here got me confused, and then straight after the exam someone told me you just had to make the equation of the trajectory equal zero! grrr...
With the inverse simult. equation q, you just had to add the two equations together, so the inverse cos's cancel out, and you're left with 4 inverse sin x equals pi, and then you just solve for x and y from there.
I think i'll get around 70ish/84. My internal mark was 47/50, so i'm hoping my final mark will be around there, what do you guys think i could get?