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secondary 3 | E Maths
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secondary 3 chevron_right E Maths

Question 13

Date Posted: 6 years ago
Views: 865
Deborah Tsia
Deborah Tsia
6 years ago
Omg I also have to do this question as homework today!!!

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Christmas MT
Christmas Mt's answer
2904 answers (A Helpful Person)
1st
As I mentioned to the other girl, bearings are just an extension of angles. You'll still only be using sine, cosine rules and area of triangle formula.

(i) Finding BC is a matter of finding angle BAC then applying cosine rule.

(ii) Pretty long and roundabout.

(iii) Now that you have learnt 2 different formulae to find the area of a triangle, finding the shortest distance is always about comparing these formulae. Remember that the shortest distance is always perpendicular.