Itute - Suggested Solutions (ALL Modules!)

[Ilovemathsmeth]

Awesome, thanks for that!

[trishs8]

35/40.. FUCK..

Seconded   :tickedoff:

Thirds haha I'm hoping we can still get an A or A+... apparently 36/40 last year was A+ and from the forums seems like there were a few tricky q's which might bring down the scoring for an A+. Hope for the best, expect the worst i guess

[jaimi38]

i'm so sorry! i meant question 7 from geometry and trigonometry.

[rusty54]

i'm so sorry! i meant question 7 from geometry and trigonometry.

First you have to find the length of the diagonal RC. To do this, you use Pythagoras.
So:
c2 (RC) = a2 + b2
RC = square root of (3.8 squared + 12 squared)
RC = 12.59 m.

You now have to find angle ACR. This triangle has AR (length of 1.5m) and RC (length of 12.59m). We are trying to find the angle ACR, and we only have two sides with lengths on them. These sides are Opposite to the angle we are trying to the find, and Adjacent to it. Therefore we use the old 'SOH-CAH-TOA' to find that we have to use Tan to solve this. Remember that if we are trying to find the angle, we use INVERSE tan.
So:
Angle ACR = tan-1 (Opposite/Adjacent)
Angle ACR = tan-1 (1.5/12.59)
Angle ACR = 6.79
....which is closest to 6.80 (A).

Hope that helps etc.

[jaimi38]

thanks heaps!
i kept putting 12.59 as the hypotaneus instead of the base so i was using sin instead of tan

[jaimi38]

what did everyone get for question 8 of geometry and trig?
i got B but i think the answer is meant to be A. the answers from itutes says B though

[dshban]

Pretty sure I got 40/40. Boom.

[julianpeiriez]

Hey guys
i got 35/40. Do you recon thats an A or A+?

[dshban]

Hey guys
i got 35/40. Do you recon thats an A or A+?

Last year it would have been an A, by one mark - so unless this exam was harder than last year's (I didn't do last year's in practice so I couldn't tell you), I'd say probably a high A.