Find the coordinates of the centre C and the length of the diameter of a circle with the equation (x-2)^2 + (y+5)^2 = 25
Equation of a circle -> (x-a)2 + (y-b)^2 = r2 where the centre = (a,b) and the radius = r
Thus using the equation above we can conclude that the centre is (2,-5)
In order to find the diamerer fo the circle, the radius is needed.
√r2 = √25 therefore r = 5 as 2r = diameter = 10
Centre of the circle is (2,-5) and has a diameter of 10
MC
Related Maths A Level answers
All answers ▸Integrate the function xsin(4x^2) with respect to x, using the integration by substitution method.
By first proving that sin2θ=2sinθcosθ, calculate ∫1+sinθcosθ dθ.
Given that x = ln(sec(2y)) find dy/dx
What is the coefficient of x^2 in the expansion of (5+2x)^0.5?