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# maths watch

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1. there is this question that i came across:

O is the origine .
OA is i+3j
OB is -2i+j
P is a variable pt such that P lies on the line defined by AB

find :
1) the value of t such that vector OP is perpendicular to vect AB
2)the value of t such that modulus of vector OP =modulus of vect AP

Another question is that ,
OA =7i+7j
OB=3i+5j
C is the foot of perpendicular from O to AB.
FInd the position vector of C relative to O.

Well, i got the answer for the 2nd question.
but i am not sure if my methode is correct .
2. (Original post by Fong_Leonard)
there is this question that i came across:

O is the origine .
OA is i+3j
OB is -2i+j
P is a variable pt such that P lies on the line defined by AB

find :
1) the value of t such that vector OP is perpendicular to vect AB
2)the value of t such that modulus of vector OP =modulus of vect AP

Another question is that ,
OA =7i+7j
OB=3i+5j
C is the foot of perpendicular from O to AB.
FInd the position vector of C relative to O.

Well, i got the answer for the 2nd question.
but i am not sure if my methode is correct .
**** **** ****!! no more p3 plzzzzzzzzzzzzzzzzz!!!!!!
3. why is it so, is it so easy for u or too hard?
u just finish the exam, sorry , i am not doing A level .
4. (Original post by Fong_Leonard)
why is it so, is it so easy for u or too hard?
u just finish the exam, sorry , i am not doing A level .
sori, i'd love to work it out and explain, but im currently STRESSED THE **** OUT cause i failed p3 and have 2 potential failures on the way in a mere 8 hours

faaaaaaaarrrrrrkkkkkkkkkk!!!!!!! !!!!!!!!!!!

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