A. 4
B. 12
C. 16
D. 8
The foot of the perpendicular from (0, 2, 3) to the line (x+3)/5 = (y-1)/2 = (z+4)/3 is:
A: The angle between the tangents drawn from origin to the circle x2+y2-14x+2y+25=0 is π/2
R: If θ is the angle between the pair of tangents drawn from (x1, y1) to the circle S=0 of radius r then tanθ/2=r/√S11
A: The equation of the common chord of the two circles x2+y2+2x+3y+1=0, x2+y2+4x+3y+2=0 is 2x+1=0
R: If two circles intersect at two points then their common chord is the radical axis
The equation of the circle which bisects the circumference of the circle x2+y2=1, x2+y2+2x=3, x2+y2+2y=3 is
The equation of the circles whose radius is 3 and which touches the circle x2+y2+2x+6y-15=0 externally at the point (2, 1) is
cos(α+β+γ)+cos(α-β-γ)+cos(β-γ-α)+cos(γ-α-β) is equal to:
The equation of the circle passing through the point (1, 2) cutting the circle x2+y2-2x+8y+7=0 orthogonally and bisects the circumference of the circle x2+y2=9 is
Origin is the centre of a circle passing through the vertices of an equilateral triangle whose median is of length 3a, then the equation of the circle is
The circle x2+y2=4x+8y+5=0 intersects the line 3x-4y=m at two distinct points if
The line 2x+3y+19-0and 9x+6y-17=0 cut the coordinate axes in