Have you got an expression for the vector AC in terms of q?
Original post by Blue112225
Have you got an expression for the vector AC in terms of q?
Yes, I got (q+2)i + 4j
Original post by mqb2766
Have you sketched the problem?
a) was essentially a circle (intersecting a line at two points)
b) is essentially a line (triangle).
a) was essentially a circle (intersecting a line at two points)
b) is essentially a line (triangle).
I was struggling to sketch b as didn’t know where to put the q+2
Original post by Anon???
I was struggling to sketch b as didn’t know where to put the q+2
Did you sketch a) if so, upload it?
Original post by mqb2766
Did you sketch a) if so, upload it?
I just solved a with Pythagorus
It was b that I couldn’t do
(edited 2 years ago)
Original post by Anon???
I just solved a with Pythagorus
It was b that I couldn’t do
It was b that I couldn’t do
I realize, if you can't sketch the problem when you come up against something a bit unusual, you don't know what to do.
b) obviously involves trig / triangles. Pls have a go at sketching a and b and upload what you think.
Original post by Anon???
Yes, I got (q+2)i + 4j
Brilliant! And now can you draw a triangle? You know the angle between that and i, so can you mark in that angle and the lengths in terms of q? Hint: remember that AC would be the hypotenuse of a triangle with sides parallel to i and j
(edited 2 years ago)
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