Represent square root 17 in number line
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Draw a right angle triangle OBA, ∠A = 90
Now, OA = 4 and AB = 1
Using Pythagorus Theorem,
OB2 = OA2 + AB2
=> OB2 = 42 + 12
=> OB2 = 16 + 1
=> OB2 = 17
=> OB = √17
Step 2.
Now, taking O as centre and OB as radius, draw an arc to cut the number line l at C.
So, OC = √17
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