The sides of a triangle are 3 cm, 5 cm and 7 cm respectively. Show that the
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The sides of a triangle are 3 cm, 5 cm and 7 cm respectively. Show that the largest angle is 120°, and find the area of the triangle.
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To show that the largest angle of the triangle is 120 we can use the Law of Cosines Lets label the ...View the full answer
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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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