ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: ben4386 on November 07, 2008, 07:57:21 pm

Title: 2003 VCAA Exam 2 c ii)
Post by: ben4386 on November 07, 2008, 07:57:21 pm

Hi guys, need help with this question

http://www.vcaa.vic.edu.au/vce/studies/mathematics/specialist/pastexams/2003/2003spexam2.pdf

I managed to do all of 5 but the last bit , it asks for "the exact height of the pyramid", I know that vector ED is a scalar multiple of what you found in C i)

the only help the assessment report gives is saying "vector resolute" but it still doesn't make a lot of sense.

Any help would be greatly appreciated

Ben

Title: Re: 2003 VCAA Exam 2 c ii)
Post by: Mao on November 07, 2008, 08:08:39 pm

the scalar resolute of OD in the direction of the vector you found in c i) is the magnitude of ED.

Title: Re: 2003 VCAA Exam 2 c ii)
Post by: ben4386 on November 07, 2008, 08:50:38 pm

oh ok cheers i get it now,

thanks