Maths-
General
Easy
Question
The normal of the curve given by the equation x = a (sin
+ cos), y = a (sin – cos) at the point Q is -
- (x + y) cos + (x – y) sin = 0
- (x + y) cos + (x – y) sin = a
- (x + y) cos – (x – y) sin = 0
- (x + y) cos – (x – y) sin = a
+ (x – y) sin = 0
+ (x – y) sin = a
– (x – y) sin = 0
– (x – y) sin = a
The correct answer is: (x + y) cos – (x – y) sin = 0
Related Questions to study
Maths-
If the tangent at ‘t’ on the curve y = 8t3 –1, x = 4t2 + 3 meets the curve again at t¢ and is normal to the curve at that point, then value of t must be -
If the tangent at ‘t’ on the curve y = 8t3 –1, x = 4t2 + 3 meets the curve again at t¢ and is normal to the curve at that point, then value of t must be -
Maths-General
Maths-
The tangent at (t, t2 – t3) on the curve y = x2 – x3 meets the curve again at Q, then abscissa of Q must be -
The tangent at (t, t2 – t3) on the curve y = x2 – x3 meets the curve again at Q, then abscissa of Q must be -
Maths-General
Maths-
If 
= 1 is a tangent to the curve x = 4t,y =
, t 
R then -
If = 1 is a tangent to the curve x = 4t,y =, t R then -
Maths-General
Maths-
The line 
+ 
= 1 touches the curve y = be-x/a at the point :
The line + = 1 touches the curve y = be-x/a at the point :
Maths-General
physics
An object moves in a straight line. It starts from the rest and its acceleration is . 2 ms2.After reaching a certain point it comes back to the original point. In this movement its acceleration is -3 ms2, till it comes to rest. The total time taken for the movement is 5 second. Calculate the maximum velocity.
An object moves in a straight line. It starts from the rest and its acceleration is . 2 ms2.After reaching a certain point it comes back to the original point. In this movement its acceleration is -3 ms2, till it comes to rest. The total time taken for the movement is 5 second. Calculate the maximum velocity.
physicsGeneral
Maths-
For the ellipse 
the foci are
For the ellipse the foci are
Maths-General
Maths-
For the ellipse 
, the latus rectum is
For the ellipse , the latus rectum is
Maths-General
Maths-
The sum of distances of any point on the ellipse 3 x2 + 4y2 = 24 from its foci is
The sum of distances of any point on the ellipse 3 x2 + 4y2 = 24 from its foci is
Maths-General
Maths-
The equations x = a 
represent
The equations x = a represent
Maths-General
Maths-
The equations x = a cos q, y = b sin q, 0 ≤ q < 2 p, a ≠ b, represent
The equations x = a cos q, y = b sin q, 0 ≤ q < 2 p, a ≠ b, represent
Maths-General
Maths-
The line y = 2x + c touches the ellipse 
if c is equal to
The line y = 2x + c touches the ellipse if c is equal to
Maths-General
Maths-
The eccentricity of the conic 3x2 + 4y2 = 24 is
The eccentricity of the conic 3x2 + 4y2 = 24 is
Maths-General
Maths-
The equation of the ellipse whose focus is (1, -1). directrix x – y – 3 = 0 and eccentricity 
is
The equation of the ellipse whose focus is (1, -1). directrix x – y – 3 = 0 and eccentricity is
Maths-General
Maths-
The equation ax2 + 2hxy + by2 + 2gx + 2fy + c = 0 represents an ellipse if
The equation ax2 + 2hxy + by2 + 2gx + 2fy + c = 0 represents an ellipse if
Maths-General
Maths-
On a new year day every student of a class sends a card to every other student. The postman delivers 600 cards. The number of students in the class are :
On a new year day every student of a class sends a card to every other student. The postman delivers 600 cards. The number of students in the class are :
Maths-General
