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So your saying that Preliminary Physics doesn't do much for year 12 physics.

how do u know this

can i be more specific, do u need any formulas that u learnt in year 11 physics for year 12 physics

ok that relieved a bit of stress, but i am still gonna revise moving about and electricity :), thanks i was scared that the year 11 course would be tested in hsc

i feel really scared now, looks like i have to learn two topics in one term

ok looks like im gonna have a stressful year 11 3rd term. So basically what are the most important topics in year 11??

Hi i am just wondering if year 11 physics is tested in the year 12 hsc physics. Also is any of the knowledge from year 11 physics actually used in year 12??? Is year 11 physics important for year 12 physics, like say if u you went bad in year 11 physics would that affect year 12 physics?

hi i had trouble with these questions 1. A (0,0), B(2,1) and C(1,5) are the vertices of a triangle ABC. The triangle is rotated anti-clockwise abiut the point A, through a right angle in the X-Y plane. Find the equation if the image lines of: a. the line AC b. the line AB c. the line BC 2...

wow thx 3unitz, did the question take you long to figure out?, because your working out was very logical.

lol sorry for late reply i was at world youth day on saturday and sunday was heaps fun. Ok the question i posted is question 62 in exercises 21(c) of 3unit fitz patrick. If you take a look, the question is very long and confusing. :)

hi guys i appreciate your help but i can't still do this question. 61. [sinA + sin(A + B) + sin(A + 2B)] / [cosA + cos(A + B) + cos(A + 2B)] = tan(A+B)

other solutions for other questions too pretty please

ok products to sum cos A cos B = ½ cos(A−B) + ½ cos(A+B) sin A sin B = ½ cos(A−B) − ½ cos(A+B) sin A cos B = ½ sin(A+B) + ½ sin(A−B) cos A sin B = ½ sin(A+B) − ½ sin(A−B) sums to products cos u + cos v = 2 cos(½(u+v)) cos(½(u−v)) cos u − cos v = −2 sin(½(u+v)) sin(½(u−v)) sin u + sin v = 2...

ok i know how to do "products as sums and differences" and "sums and differences to products" just these questions are weird and i cant do them

Re: 回复: Re: LHS = RHS questions oh if u meant that there is more then x is more then 3, there is no need to worry i have learnt the products to sums and sums to differences.

which question is this sorry?

sorry but i already tried out ur advice (just realised) and i could not do the questions so yeah basically im asking for the solutions to each question if thats not too much :)

thx i will use ur advice

are u talking to me tommykins?

Unless you forgot what the adjacent side is, but no offence but i think you should know this if you are in year 12, judging by your signature