the hard questions (1 Viewer)

N

ND

Guest
Which part? For i), you use /\s ABE and FCB. For ii) you use the sum of angle formula for tan (or cot). iii) You minus the areas of teh triangles from the square, then use (ii) to get it all in terms of p. iv) you just differentiate (iii) and sub in.
 

mikehunt

New Member
Joined
Jul 29, 2003
Messages
21
Location
roseville, sydney
i only got i) and ii)

i) use triangle EAB for alpha, so tan alpha = 1/p

and tan beta = 1/q

ii) tan (alpha + beta) = (tan alpha + tan beta)/ 1-(tan alpha X tan beta)

therefore tan 135 = (p+q)/(pq - 1)

-1 = (p+q)/(pq - 1)

p+q = 1-pq

ran out of time for the rest
 

Dumbarse

Member
Joined
Aug 9, 2002
Messages
423
Location
BOS moderator & operator
the whole paper looks like it revolved around only a few topics
the basic 3 unit stuff they love to wack in,
ie. newtons, perpendicular distance, inverse functions and their graphs
aswell as
a bit of probabilty
heaps of motion
and heaps of geometry
 

vegeta_316

Member
Joined
Sep 11, 2003
Messages
109
Location
Wollongong
Ah Fuck!! I can't believe I couldn't see it. It's right there!!! I was bloody looking at tri AGE & CFH instead of AGB &CFB.

Man (i) makes all the difference to the entire (b) question.
7 marks! Unbelievable.

Congrats ND on your 3 Unit performance.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top