Recent content by omicron

If I did, I wouldn't have posted them. :bugeye:

Yes I do know.

One more question. a) The vector \displaystyle \overrightarrow{OA} has magnitude 100 and has the same direction as \displaystyle \left(\begin{array}{cc}7\\24\end{array}\right). Express \displaystyle \overrightarrow{OA} as a column vector. b) The vector \displaystyle \overrightarrow{OB} is...

Thank you!

Yes I have.

The position vectors of A, B and C relative to an origin O are -I+pj, 5i+9j & 6i+8j respectively. Determine the value of p for which A, B & C are collinear.

Thank you.

Three vectors a, b and c are such that a = i + 3j, b = 2i + j and c = i + 13j. Find (i) the vector which is parallel to a + b and of magnitude 20 units. (ii) the value of p and of q for which pa + qb = c I need help in both parts.

Yup. Thanks!

Don't know :uhh:

I haven't done anything. I don't have a clue what to do.

Find all the angles from 0^{\circ} to 360^{\circ} inclusive which satisfy the equation $ \tan(x-30^{\circ}) - \tan 50^{\circ} = 0

No (I wish we could have). http://story.news.yahoo.com/news?tmpl=story&cid=570&ncid=753&e=3&u=/nm/20050218/sc_nm/space_explosion_dc

:uhh: :uhh: I have never heard of such news agency. :uhh: :uhh: So I guess it isn't number one.

Yes, apparently I found a way. Find the derivitive Gradient of 9y=4x+3 and normal => 4/9 Gradient of the tangent line => -9/4 Set -9/4 = derivitive You know, its too coincidental that you got the same question as me? :uhh: