Solved IB ACIO Question
A solved IB ACIO PYQ - decoded step-by-step.
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Q · Clockmedium · 45s
At 9:15, what is the smaller angle between the hour and minute hands?
TopicClock
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Hour hand at (9*30 + 15*0.5) = 277.5°, minute hand at 90°, difference = 187.5°, smaller angle = 360 - 187.5 = 172.5°.
Final Answer: Option A - 172.5°