JEE Exam > JEE Videos > Mathematics (Maths) Class 12 > Distance of a point from a Plane and Angle Between a Line and a Plane - Three Dimensional Geometry
Distance of a point from a Plane and Angle Between a Line and a Plane - Three Dimensional Geometry Video Lecture | Mathematics (Maths) Class 12 - JEE
FAQs on Distance of a point from a Plane and Angle Between a Line and a Plane - Three Dimensional Geometry Video Lecture - Mathematics (Maths) Class 12 - JEE
| 1. How do you calculate the distance of a point from a plane in three-dimensional geometry? |  |
Ans. To calculate the distance between a point and a plane in three-dimensional geometry, we can use the formula:
Distance = |ax + by + cz + d| / √(a^2 + b^2 + c^2)
where (x, y, z) represents the coordinates of the point, and the equation of the plane is ax + by + cz + d = 0. By substituting the values into the formula, we can find the distance.
| 2. Can you explain how to find the equation of a plane given a point and a normal vector? | |
Ans. Yes, to find the equation of a plane given a point (x1, y1, z1) on the plane and a normal vector (a, b, c), we can use the formula:
ax + by + cz = ax1 + by1 + cz1
where (x, y, z) represents any point on the plane. The normal vector (a, b, c) is perpendicular to the plane, and by substituting the values into the formula, we can obtain the equation of the plane.
| 3. How can we find the angle between a line and a plane in three-dimensional geometry? | |
Ans. To find the angle between a line and a plane in three-dimensional geometry, we can use the formula:
Angle = arctan(|ax + by + cz| / √(a^2 + b^2 + c^2))
where (x, y, z) represents the direction ratios of the line, and the equation of the plane is ax + by + cz + d = 0. By substituting the values into the formula, we can calculate the angle between the line and the plane.
| 4. Is it possible for a line to be parallel to a plane in three-dimensional geometry? | |
Ans. Yes, it is possible for a line to be parallel to a plane in three-dimensional geometry. If the direction ratios of the line (x, y, z) are proportional to the coefficients of the plane's equation (ax + by + cz + d = 0), then the line is parallel to the plane. This occurs when a line lies entirely within the plane or when its direction ratios are multiples of the plane's coefficients.
| 5. Can you explain how to find the distance between two parallel planes in three-dimensional geometry? | |
Ans. To find the distance between two parallel planes in three-dimensional geometry, we can use the formula:
Distance = |d2 - d1| / √(a^2 + b^2 + c^2)
where d1 and d2 are the constants in the equations of the planes ax + by + cz + d1 = 0 and ax + by + cz + d2 = 0, respectively. The values of a, b, and c are the same for both planes. By substituting the values into the formula, we can calculate the distance between the parallel planes.
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