Mathematics, 30.07.2019 17:20, iilovejohnccena1022
In the following questions, do not evaluate surds (e. g. ? 2). leave them in your answer in that form (e. g. ? ? = 1 ± ? 2).
1. (a) write down the vector equation of the line passing through the points a and b with
? ?
position vectors = + + 2? ? and = ? + 3? ? respectively. find the
cartesian equation of the line.
(b) find the vector and cartesian equations of the line passing through the point a = (3,1,2) which is parallel to the vector (-1,2,-3).
2. find the scalar product of each pair of vectors, and hence determine the angle between them:
?
(a) = + and ? ? = +
?
(b) = + and ? ? = ?
3. (a) points a=(4,1,2), b=(3,-2,1) and c=(0,1,-1) form a triangle abc. find the interior angle b
the triangle using the scalar product and an appropriate selection of the vectors
and
(b) use the vector product to find the area of the triangle.
4. (a) find the vector product of = + and ? ? = ? . comment on your answer.
)find a =+? ? and? ? =? ? .
Answers: 3
Mathematics, 21.06.2019 16:30, erbnichole
Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)
Answers: 1
Mathematics, 21.06.2019 16:50, thegoat3180
The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?
Answers: 1
Mathematics, 22.06.2019 01:10, 24nelsoaddh
If the probability of an event happening is 65% then the probability this event does not occur?
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