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secondary 4 | E Maths
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secondary 4 chevron_right E Maths chevron_right Singapore

how to find x

Date Posted: 4 months ago
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Han Muyuan Alex
Han Muyuan Alex's answer
18 answers (Tutor Details)
Angle at centre of cirle is ALWAYS dounle that of the angle at the circumference:

As such,

Angle at centre of circle: 360° - 270° = 90°
Angle at circumference: 90° ÷ 2 = 45°