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What is the principal angle of the fourth-quadrant ray of the line (y=-x)?रेखा (y=-x) की चतुर्थ चतुर्थांश वाली किरण का मुख्य कोण क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{7\pi}{4})(\frac{7\pi}{4})
The fourth-quadrant ray of (y=-x) has reference angle (\frac{\pi}{4}). Hence the principal angle is (\frac{7\pi}{4}).चतुर्थ चतुर्थांश में (y=-x) की किरण का संदर्भ कोण (\frac{\pi}{4}) है। इसलिए मुख्य कोण (\frac{7\pi}{4}) है।
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