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Keeping the arc length same the radius is increased by (25%). If the earlier central angle was (\frac{5\pi}{8}) what will be the new angle?एक चाप की लंबाई समान रखते हुए त्रिज्या (25%) बढ़ा दी गई। यदि पहले केंद्रीय कोण (\frac{5\pi}{8}) था तो नया कोण क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{\pi}{2})(\frac{\pi}{2})
For fixed arc length (\theta) is inversely proportional to radius. The new radius is (\frac{5}{4}) times so the new angle is (\frac{\pi}{2}).चाप लंबाई स्थिर हो तो (\theta) त्रिज्या के व्युत्क्रमानुपाती है। नई त्रिज्या (\frac{5}{4}) गुना है इसलिए नया कोण (\frac{\pi}{2}) होगा।
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