a) Point A(6,7,2) lies on l1. Point B(9,16,5) also lies on l1. Find the distance between these two points. b) l2 lies in the same z plane as l1 and crosses l1 at A and is perpendicular to l1. Express l2 in vector form.
a) Distance between two points ((x2- x1)^2 + (y2-y1)^2)^1/2Substitute in values to find distance.b) Write out l1 in vector form using info from points A and B.Use knowledge of scalar product to construct l2's direction vector.Construct l2.
AN
Related Maths A Level answers
All answers ▸Find the exact solution to: ln(x) + ln(7) = ln(21)
Intergrate ln(x) with resepct to x
Work out the equation of the normal to the curve y = x^3 + 2x^2 - 5 at the point where x = -2. [5 marks]
Find D when 8x^3-12x^2-2x+D is divided by 2x+1 when the remainder is -2