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secondary 4 | A Maths
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heyhiyo
Heyhiyo

secondary 4 chevron_right A Maths chevron_right Singapore

help thanks

Date Posted: 2 years ago
Views: 179
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Jk
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:)
Eric Nicholas K
Eric Nicholas K
2 years ago
cos x = plus minus (sqrt 3)/2

Allowing x = 5pi/6 as another valid solution, which will be a minimum point on the graph.
Jk
Jk
2 years ago
Thank you！sharp eyes there :)