[datta01]

Can you explain to me the question on the link and tell how to do it please, i need this real fast.

[datta01]

I dont understand what you mean

[raheem94]

(Original post by TenOfThem)
I dont understand why you do not understand


The question refers to a graph drawn on a grid ... you have not given us the graph

Her attachment has a graph in it.

Here is the graph:

[TenOfThem]

(Original post by raheem94)
Her attachment has a graph in it.

How very odd

My apologies, datta ... when I open the attachment there is no graph

[datta01]

Its ok , so can you help me??

[TenOfThem]

cos(0) = 1

but the graph is at (0,0) so a-b=0

The first maximum of the cos graph is usually when the angle = 90 so that should tell you what k is


then look when x=90 and get another equation for a and b

[datta01]

Thanks