Question
A tangent to the ellipse x2 + 4y2 = 4 meets the ellipse x2 + 2y2 = 6 at P and Q. The angle between the tangents at P and Q of the ellipse x2 + 2y2 = 6 is
The correct answer is:
Related Questions to study
An ellipse has OB as a semi – minor axis, F, F' are its foci and the angle FBF' is a right angle. Then the eccentricity of the ellipse is
An ellipse has OB as a semi – minor axis, F, F' are its foci and the angle FBF' is a right angle. Then the eccentricity of the ellipse is
The equation of the tangents drawn at the ends of the major axis of the ellipse 9x2 + 5y2 – 30y = 0 is
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For the ellipse 3x2 + 4y2 – 6x + 8y – 5 = 0
For the ellipse 3x2 + 4y2 – 6x + 8y – 5 = 0
If S’ and S are the foci of the ellipse 
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If S’ and S are the foci of the ellipse and P (x, y) be a point on it, then the value of SP + S’P is
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The eccentricity of the curve represented by the equation x2 + 2y2 – 2x + 3y + 2 = 0 is
The foci of the ellipse 25 (x + 1)2 + 9 (y + 2)2 = 225 are
The foci of the ellipse 25 (x + 1)2 + 9 (y + 2)2 = 225 are
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The eccentricity of the ellipse 9x2 + 5y2 – 30y = 0 is
The sum of all possible numbers greater than 10,000 formed by using {1,3,5,7,9} is
The sum of all possible numbers greater than 10,000 formed by using {1,3,5,7,9} is
Number of different permutations of the word 'BANANA' is
In this question, one might think that the total number of permutations for the word BANANA is 6!
This is wrong because in the word BANANA we have the letter A repeated thrice and the letter N repeated twice.
Number of different permutations of the word 'BANANA' is
In this question, one might think that the total number of permutations for the word BANANA is 6!
This is wrong because in the word BANANA we have the letter A repeated thrice and the letter N repeated twice.
The number of one - one functions that can be defined from 
into 
is
The number of one - one functions that can be defined from into is
Four dice are rolled then the number of possible out comes is
Four dice are rolled then the number of possible out comes is
The number of ways in which 5 different coloured flowers be strung in the form of a garland is :
The number of ways in which 5 different coloured flowers be strung in the form of a garland is :
Number of ways to rearrange the letters of the word CHEESE is
Number of ways to rearrange the letters of the word CHEESE is
The number of ways in which 17 billiard balls be arranged in a row if 7 of them are black, 6 are red, 4 are white is
We cannot arrange the billiards balls as follows:
There are 17 balls, so the total number of arrangements = 17!
This is incorrect because this method is applicable only when the balls are distinct, not identical. But, in our case, all the balls of the same color are identical.
The number of ways in which 17 billiard balls be arranged in a row if 7 of them are black, 6 are red, 4 are white is
We cannot arrange the billiards balls as follows:
There are 17 balls, so the total number of arrangements = 17!
This is incorrect because this method is applicable only when the balls are distinct, not identical. But, in our case, all the balls of the same color are identical.
