_11. The value of a so that the line x = 2 – 3t, y = 1+ at, z = -3+ 9t is perpendicular to the line =- is(a) 15.(b) –15.(c) 10.(d) – 10._12. The cosine of the angle between the lines L;: passing thru P, (1,2,3) & P2(-2,3,4) and L2: passing thruQ:(-1,0,1) and Q2(-2,1,2) is(a)(b)(c)(d) None of these.

11) Given that, L1: x=2-3t, y=1+at, z=-3+9tL2:x+11=y+22=z+5-3

Answered: _11. The value of a so that the line x…

_11. The value of a so that the line x 2– 3t, y = 1+ at, z = -3+9t is perpendicular to the line =- (c) 10. is (a) 15. (b) –15. (d) – 10.

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter1: Equations And Graphs

Section1.1: The Coordinate Plane

Problem 3E: The distance between the points (a, b) and (c, d) is ___________. So the distance between (1, 2) and...

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Concept explainers

Coordinate Geometry

Coordinate geometry, also known as analytic geometry or Cartesian geometry in classical mathematics, is a type of geometry that is studied using a coordinate system. Coordinate geometry is a branch of mathematics that describes the position of points on a plane using an ordered pair of numbers called coordinates.

Question

_11. The value of a so that the line x = 2 – 3t, y = 1+ at, z = -3+ 9t is perpendicular to the line =- is
(a) 15.
(b) –15.
(c) 10.
(d) – 10.
_12. The cosine of the angle between the lines L;: passing thru P, (1,2,3) & P2(-2,3,4) and L2: passing thru
Q:(-1,0,1) and Q2(-2,1,2) is
(a)
(b)
(c)
(d) None of these.

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