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secondary 3 | E Maths
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jiho
Jiho

secondary 3 chevron_right E Maths chevron_right Singapore

hi!
really need help with this and it’s urgent too:(
explanation would be great as i dont understand, I’ve tried doing this question many times but I don’t get the right answer.

Date Posted: 6 months ago
Views: 112
TJM
TJM
6 months ago
a) use converse of Pythagoras’ theorem,
a^2 = b^2 + c^2
Since 13^2 = 12^2 +5^2 , by the converse of Pythagoras’ theorem , triangle is a right angled triangle.

b) hypothenuse is the longest side , so since it’s 14.5cm and 13 unit , find 1 unit.
after finding 1 unit , find length b and c.
after finding length b and c (give more sf) , area of triangle is 1/2 (b) (c) , give 3sf.

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Alison
Alison's answer
6 answers (Tutor Details)
1st
this is for (b)
jiho
Jiho
6 months ago
thank you so much!!