In the triangle ABC, AB(vector) = 9i + 2j and AC(vector) = 7i 6j. a. Find
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In the triangle ABC, AB(vector) = 9i + 2j and AC(vector) = 7i − 6j.
a. Find BC(vector) .
b. Prove that the triangle ABC is isosceles.
c. Show that cos ∠ABC = 1/√5
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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