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secondary 4 | E Maths
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Phil
Phil

secondary 4 chevron_right E Maths chevron_right Singapore

How do we do both parts?

Date Posted: 4 years ago
Views: 425
snell
Snell
4 years ago
(i)
use cosine rule to find CQ
CB = BQ = 18 cm
angle CBQ = 48 deg




(ii)
CA = AQ = √(18² + 24²)

use cosine rule to find angle CAQ

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Lim Xin Rong
Lim Xin Rong's answer
3 answers (Tutor Details)
1st
Question tests your usage of cosine rule