Teaching Haryana (HPSC) PGT Mock Test 2024 Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
दो बिंदुओं (-2, 3, -4) और (1, 2, 3) से गुजरने वाली रेखा की दिशा कोसाइन ज्ञात कीजिए?
1
\(\frac{5}{{\sqrt {411} }},\frac{{ - 5}}{{\sqrt {411} }},\frac{{19}}{{\sqrt {411} }}\)
2
\(\frac{3}{{\sqrt {361} }},\frac{{ - 1}}{{\sqrt {361} }},\frac{{19}}{{\sqrt {361} }}\)
3
\(\frac{5}{{\sqrt {387} }},\frac{{ - 1}}{{\sqrt {387} }},\frac{{19}}{{\sqrt {387} }}\)
4
\(\frac{3}{\sqrt{59}}, \frac{-1}{\sqrt{59}}, \frac{7}{\sqrt{59}}\)