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secondary 3 | A Maths
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Tarah toh
Tarah Toh

secondary 3 chevron_right A Maths chevron_right Singapore

Help please...thnk uu

Date Posted: 5 years ago
Views: 298
Eric Nicholas K
Eric Nicholas K
5 years ago
For these questions, we need to use several concepts:

1. Gradients of two perpendicular lines multiply to -1

2. Gradients of parallel lines are equal

3. Length of line is Pythagoras formula

4. Equations of line a of the form y = mx + c
Eric Nicholas K
Eric Nicholas K
5 years ago
Will send you the workings later by 2 am.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
We need to obtain the coordinates of E by finding the equations of lines CE and DE before finding the area using the shoelace method or some other way.

If you have further doubts, let me know.