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Sorry but i got 2 more questions: 5. Use the factors of x^3 - y^3 to show that cos^6A - sin^6A = [1 - 1/4sin^2(2A)] cos2A and finally 6. If tanA = ktanB, show that (k - 1)sin(A+B) = (k + 1)sin(A - B)

ok ty

Hello more Trig questions that I could not do. 1. If cosA = (p^2 - m^2 / p^2 + m^2) and 0 < A < 90 express tanA and sin2A in terms of p and m. 2. If A, B and C are in arithmetic sequence, prove that sinA + sinC = 2sinBcos(B - A) 3. If 4tan(A - B) = 3tanA, prove that tanB = (sin2A / 7 +...

oh ok, 2cos60 is basically 1, kool

may i ask where did the 2cos60 go?

Are u sure that u can use methods even if they are not in the syllabus, ie. using products and sums to solve a trig question in a 3unit test paper. I have heard people getting zero marks for doing this.

ok thanks for ur inputs

Can some clear this up for me , I am just wondering if the trigonometry topic "Products as sums or differences" and "Sum or differences to products" is in the 3unit syllabus. If it is not does that mean that i would not get tested on it in the hsc. Also is it useful to learn, even in the case...

lmao are u kidding me? 60 dollars a day, my friend who earns 12 dollars an hour at Kfc can make more then your brother in 6hours , so yeah 70 dollars a day is extremely unrealistic.

thanks

I need help with these questions 1. sinx + 1 - cosx / sinx - 1 + cosx = 1 + tan(x/2) / 1 - tan(x/2) 2. sinA + sin(90 - A) + 1 / sinA - sin(90 - A) + 1 = cot(A/2) 3. cot (x+y) = cotxcoty - 1/ cotx + coty 4. 2cos(x/2) - 1 - cosx / 2cos(x/2) + 1 + cosx = 1 - cos(x/2) / 1+...

Keeping 2 unit maths opens alot of doors in terms of the courses you can do at uni because simply most courses need 2 unit maths, general maths doesn't cut it, so think about that. Honestly year 11 general math is basically year 10 advanced math and maybe a little harder, so catching up won't...

do you do discrete mathematics in civil engineering? if not then what is the general level of the mathematics in the course

Re: ___ MATH (up to ext2) & Physics Experienced TUTOR --- Bankstwon / Canterbury Ar are u doing ur hsc this year?

oi im interested, can u tutor in bankstown area?

Re: ___ MATH (up to ext2) & Physics Experienced TUTOR --- Bankstwon / Canterbury Ar I am interested and i also live in the Bankstown area, are u available in 2 weeks time and wat do u charge per hour, i needhelp in 3 unit maths as i am struggling

well too be honest with you no, i will only be doing 3 unit. 3 unit is enought to start, as civil engineering requires 3 unit as assumed knowledge, but yeah if u can do 4 unit it would be an advantage but if u don't no biggie. I will only be doing 3 unit because atm i dnt think i am capable of...

i will :)

my course i want to get into is civil engineering so i will find out

wow then the maths ur doing must be incredibly difficult