वर्गमूल सर्पिल में \(\sqrt{399}\) पर (1) इकाई लंब बनाने से कौन-सा कर्ण बनेगा?
In a square root spiral, which hypotenuse is formed by drawing a (1) unit perpendicular on \(\sqrt{399}\)?
Explanation opens after your attempt
B. \(\sqrt{400}\)
Concept
The new hypotenuse is \(\sqrt{399+1}=\sqrt{400}\). Its exact value is (20).
Why this answer is correct
The correct answer is B. \(\sqrt{400}\). The new hypotenuse is \(\sqrt{399+1}=\sqrt{400}\). Its exact value is (20).
Exam Tip
नया कर्ण \(\sqrt{399+1}=\sqrt{400}\) है। इसका सटीक मान (20) है।
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