रेखा (y=-x) की चतुर्थ चतुर्थांश वाली किरण का मुख्य कोण क्या है?
What is the principal angle of the fourth-quadrant ray of the line (y=-x)?
Explanation opens after your attempt
Correct Answer
D. \(\frac{7\pi}{4}\)
Concept
The fourth-quadrant ray of (y=-x) has reference angle \(\frac{\pi}{4}\). Hence the principal angle is \(\frac{7\pi}{4}\).
Why this answer is correct
The correct answer is D. \(\frac{7\pi}{4}\). The fourth-quadrant ray of (y=-x) has reference angle \(\frac{\pi}{4}\). Hence the principal angle is \(\frac{7\pi}{4}\).
Exam Tip
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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