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https://drive.google.com/open?id=0B_RlXPQTW1cRaHo2bDNCaWFuOFU I'm unsure on how to approach this question and would appreciate a hint in the right direction. Thanks for the help :)

https://drive.google.com/open?id=0B_RlXPQTW1cRREVqWmZRRHU1LTg For a) I used the angle sum of a polygon formula, would this be the correct approach or would I need to do so by other means? For b) I'm unsure on what to do but I'm probably overthinking it. Thanks for the help.

A hot air balloon flying at 950m/h at a constant altitude of 3000m is observed to have an angle of elevation of 78 degrees. After 20 minutes, the angle of elevation is 73 degrees. Calculate the angle through which the observer has turned during those 20 minutes. Working Out...

Thanks

Hi pikachu975, how did you get T2cos10tan30? I'm a bit confused understanding on how to get tan30. Thanks

yes

So what am I supposed to do exactly? I'm just unsure on what to do after 1/2 + cosxsiny, i just need a hint in the right direction. Thanks :)

if sinx = 2/3 and cosy = 3/4, find the exact value of a) sin(x+y) Thanks for the help :)

Thanks

I'm unsure if the working out is correct.

Show that: (n+2)! + (n+1)! + n!= n!(n+2)^2

I have trouble understanding what roots to use for certain questions, do you have any advice?

I don't understand how you got to a=11 and I think it's wrong because x^3+11x^2+36x-36=0 has an approximate solution x= 0.79365 , and this solution doesn't satisfy the question. Can you please explain in more detail because I'm not exactly sure how to start this. Thanks

One of the roots of the cubic x^3+ax^2+36x-36=0 is the product of the other two roots. Find the value of a and hence find all the roots.

Thanks for the help!

Write down an odd monic polynomial of least degree with a triple root of x=-2 and a root of x=1

Solve 6x4+5x3-24x2-15x+18=0 if the sum of two of its roots is zero.