Question
Mathematics Question on Circle
Let the centre of a circle C be (α, β) and its radius r < 8. Let 3x + 4y = 24 and 3x – 4y = 32 be two tangents and 4x + 3y =1 be a normal to C. Then (α – β + r) is equal to
A
5
B
6
C
7
D
9
Answer
7
Explanation
Solution
The correct answer is (C) : 7