If \( \alpha, \beta, \gamma \) be the angles which a line makes wit...
If \( \alpha, \beta, \gamma \) be the angles which a line makes with the
\( \mathrm{P} \) positive direction of co-ordinate axes, then
W \( \sin ^{2} \alpha+\sin ^{2} \beta+\sin ^{2} \gamma= \)
(1) 2
(2) 1
(3) 3
(4) 0
π²PW App Link - https://bit.ly/YTAI_PWAP
πPW Website - https://www.pw.live
Other Videos By PW Solutions
| 2023-04-07 | If \( P(0,1,2), Q(4,-2,1) \) and \( O(0,0,0) \) are three
\( \mathr... |
| 2023-04-07 | Density of wood is \( 0.5 \mathrm{gm} / \mathrm{cc} \) in the CGS s... |
| 2023-04-07 | A line makes the same angle \( \theta \), with each of the \( x \)
... |
| 2023-04-07 | If \( \frac{1}{2}, \frac{1}{3}, n \) are direction cosines of a lin... |
| 2023-04-07 | If the direction cosines of a line are \( \left(\frac{1}{c}, \frac{... |
| 2023-04-07 | Which of the following graph is correct:
\( n= \) magnitude of meas... |
| 2023-04-07 | The physical quantity which has dimensional
P formula as that of \(... |
| 2023-04-07 | Calculate the angle of \( 1^{\prime} \) (minute of arc or arcmin)
\... |
| 2023-04-07 | If the direction ratios of a line are proportional to
\( \mathrm{P}... |
| 2023-04-07 | The projections of a line segment on the coordinate
\( \mathrm{P} \... |
| 2023-04-07 | If \( \alpha, \beta, \gamma \) be the angles which a line makes wit... |
| 2023-04-07 | The ratio in which the line joining the points
P \( (1,2,3) \) and ... |
| 2023-04-07 | The direction cosines of a vector \( \vec{r} \) which is equally
\(... |
| 2023-04-07 | If \( \frac{1}{2}, \frac{1}{3}, n \) are direction cosines of a lin... |
| 2023-04-07 | If a line makes angle \( \frac{\pi}{3} \) and \( \frac{\pi}{4} \) w... |
| 2023-04-07 | The coordinates of the point where the line segment
P joining \( A(... |
| 2023-04-07 | In \( \triangle A B C \) the mid points of the sides \( A B, B C \)... |
| 2023-04-07 | If a line makes angle \( \alpha, \beta \) and \( \gamma \) with the... |
| 2023-04-07 | A line \( O P \) through origin \( O \) is inclined at \( 30^{\circ... |
| 2023-04-07 | The direction ratios of a line are \( -2,3,6 \). If the
P line make... |
| 2023-04-07 | Prove that the points \( A(0,4,1), B(2,3,-1) \),
P \( C(4,5,0) \) a... |
0