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

## 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 ms^{2}.After reaching a certain point it comes back to the original point. In this movement its acceleration is -3 ms^{2}, 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 ms^{2}.After reaching a certain point it comes back to the original point. In this movement its acceleration is -3 ms^{2}, 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 x^{2} + 4y^{2} = 24 from its foci is

### The sum of distances of any point on the ellipse 3 x^{2} + 4y^{2} = 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 3x^{2} + 4y^{2} = 24 is

### The eccentricity of the conic 3x^{2} + 4y^{2} = 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 ax^{2} + 2hxy + by^{2} + 2gx + 2fy + c = 0 represents an ellipse if

### The equation ax^{2} + 2hxy + by^{2} + 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