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 ▸The Curve C has equation y = 3x^4 - 8x^3 - 3. Find dy/dx.
Simplify the following algebraic fraction; (3x^2 - x - 2) / ((1/2)x + (1/3)).
The quadratic equation 2x^2 + 8x + 1 = 0 has roots x1 and x2. Write down the value of x1+x2 and x1*x2 and find the value of x1^2 + x2^2
given y = x^2 - 7x + 5, find dy/dx from first principles