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When (20^\circ) is added to an angle, its measure becomes (\frac{7\pi}{18}) radians. What is the original angle?किसी कोण में (20^\circ) जोड़ने पर उसका माप (\frac{7\pi}{18}) रेडियन हो जाता है। मूल कोण क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (50^\circ)(50^\circ)
(\frac{7\pi}{18}=70^\circ), so the original angle is (70^\circ-20^\circ=50^\circ). In exams, first convert the final measure into degrees.(\frac{7\pi}{18}=70^\circ), इसलिए मूल कोण (70^\circ-20^\circ=50^\circ) है। परीक्षा में अंतिम माप को पहले डिग्री में बदलें।
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