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secondary 2 | Maths
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li ann
Li Ann

secondary 2 chevron_right Maths chevron_right Singapore

hello!! I need help with part b) pls get back Asap Thanks so much

Date Posted: 2 years ago
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Christie Wong
Christie Wong's answer
3 answers (A Helpful Person)
Cos 70 = x/7 where x is A to the perpendicular line
x=7cos 70
DC=AB-2x
DC=20-2(7cos70)
=15.2 cm