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    IB Math AAHL
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    Vectors
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    Vectors

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    Thumbnail for Vector arithmetic & geometry

    Addition, subtraction and scalar multiplication, computed algebraically and geometrically

    Vector arithmetic & geometry
    Thumbnail for Scalar and vector products

    Introduction and applications of vector and scalar products

    Scalar and vector products
    Thumbnail for Equations of a line

    Vector form, cartesian form, parametric form, modeling with vectors

    Equations of a line (Plus Only)
    Thumbnail for Coincident, Parallel, Intersecting & Skew Lines

    Parallel lines in 3D, coincident, skew and intersecting lines

    Coincident, Parallel, Intersecting & Skew Lines (Plus Only)
    Thumbnail for Angles and intersections with planes

    Intersection of a line and plane, angle between line and plane, intersection and angle between two planes, intersection of 3 planes

    Angles and intersections with planes (Plus Only)
    Thumbnail for Equations of a plane

    Vector and scalar product forms of a plane, cartesian equation of a plane

    Equations of a plane (Plus Only)

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    IB: 4
    1

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    The unit vector b^=⎝⎛​p0q​⎠⎞​ is perpendicular to a=⎝⎛​132​⎠⎞​. Find the possible values of p and q.

    [5]
    2

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    Find a unit vector perpendicular to the vectors i+2j+2k and 2i+j−2k.

    [5]
    3

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    Consider the vectors a=3i−2j+k and b=i+5j−2k.

    1. Find

      1. a−2b

        [1]
      2. ∣a+b∣

        [2]
    2. Find the angle between a and b.

      [3]
    3. Find the area of the triangle with two sides a and b.

      [4]
    4

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    Consider the lines with vector equations

    r1​=⎝⎛​1−2a−3​⎠⎞​+λ⎝⎛​a−2a3​⎠⎞​r2​=⎝⎛​a+251​⎠⎞​+μ⎝⎛​a+92−2​⎠⎞​

    where a∈R.

    1. Given that the lines are perpendicular, Find the possible value(s) for a.

      [3]

    Now consider the case where a>0.

    1. Determine with justification whether the lines are parallel, intersecting or skew.

      [4]
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