r and q are collinear
r and q are perpendicular
The magnitude of r is 52 units
The projection of r on q is √117 units.
Correct answer is B
The dot product of two perpendicular forces = 0
(9i+6j).(4i−6j)=36−36=0
Hence, r and q are perpendicular.
Given that g ; x → 3x and f ; x → cos x. Find the value of go f(20o) ...
Consider the following statements: p: Birds fly q: The sky is blue r: The grass is green W...
A polynomial is defined by f(x+1)=x3+px2−4x+2, find f(2)...
In how many ways can the letters of the word 'ELECTIVE' be arranged? ...
The gradient of point P on the curve y=3x2−x+3 is 5. Find the coordinates of P....
There are 7 boys in a class of 20. Find the number of ways of selecting 3 girls and 2 boys ...