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secondary 3 | E Maths
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cheryll
Cheryll

secondary 3 chevron_right E Maths chevron_right Singapore

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Date Posted: 3 years ago
Views: 401

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goodsamathritan
Goodsamathritan's answer
745 answers (Tutor Details)
1st
the conversion to km is not necessary, just me wanting to avoid using big numbers.
cheryll
Cheryll
3 years ago
thank youu
cheryll
Cheryll
3 years ago
great answer ! easy to understand
goodsamathritan
Goodsamathritan
3 years ago
thank you! it’s good to remember cosine rule whenever you are:
1) given 3 sides of a triangle and no angle
2) given 2 sides with angle but required to find the 3rd side