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# Maths hw help!!!! Tweet

Maths and statistics discussion, revision, exam and homework help.

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1. Maths hw help!!!!
Can you explain to me the question on the link and tell how to do it please, i need this real fast.
Attached Files
2. graphs and functions 1.rtf (805.4 KB, 122 views)
3. Re: Maths hw help!!!!
I dont understand what you mean
4. Re: Maths hw help!!!!
(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:

5. Re: Maths hw help!!!!
(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
6. Re: Maths hw help!!!!
Its ok , so can you help me??
7. Re: Maths hw help!!!!
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
8. Re: Maths hw help!!!!
Thanks