Question
Download Solution PDFयदि एक रेखा धनात्मक x, y, z-अक्ष के साथ क्रमशः 60°, 135°, 120° का कोण बनाती है, तो कोज्या ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFअवधारणा:
यदि एक रेखा धनात्मक x, y, और z-अक्ष के साथ क्रमशः α, β, और γ का कोण बनाती है, तो रेखा की कोज्या cos α, cos β, cos γ हैं।
गणना:
दिया गया है, एक रेखा धनात्मक x, y, z-अक्ष के साथ क्रमशः 60°, 135°, 120° का कोण बनाती है,
⇒ रेखा की कोज्या (l, m, n) = (cos 60°, cos 135°, cos 120°)
⇒ \(\rm l=\frac{1}{2},m=-\frac{1}{\sqrt2}, n=-\frac{1}{2}\)
∴ सही विकल्प (1) है।
Last updated on May 26, 2025
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