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10 under root 3 is the answer
wvaibhava:
use 30-60-90 method to find it
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IN TRIANGLE ABC
angleB=90 degree
angleC=30degree
angleA=180-90-30=60degree
IN THIS TRIANGLE angleB is the biggest angle so,its opposite side AC will be biggest,
and side opposite to angleC which is AB is the smallest side.
we conclude thaf side BC will less than AC(20cm) and bigger than AB. acc. to options see match this statement and choose your answer.( other 2 options are not showing and both above are wrong).
HOPE IT HELPS YOU!
angleB=90 degree
angleC=30degree
angleA=180-90-30=60degree
IN THIS TRIANGLE angleB is the biggest angle so,its opposite side AC will be biggest,
and side opposite to angleC which is AB is the smallest side.
we conclude thaf side BC will less than AC(20cm) and bigger than AB. acc. to options see match this statement and choose your answer.( other 2 options are not showing and both above are wrong).
HOPE IT HELPS YOU!
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