Standard and General Form of Equation of a Circle
Conic Section

119688 If \((3, \lambda)\) and \((5,6)\) are the conjugate point of \(\mathbf{x}^2+\mathbf{y}^2=3\), then \(\lambda\) is equal to

1 2
2 -2
3 1
4 -1
Conic Section

119692 Let \(A B\) be a line segment of length 2 . Construct a semicircle \(S\) with \(A B\) as diameter. Let \(C\) be the midpoint of the arcAB. Construct another semicircle \(T\) external to the triangle \(A B C\) with chord \(A C\) as diameter. The area of the region inside the semicircle \(T\) but outside \(S\) is

1 \(\frac{\pi}{2}\)
2 \(\frac{1}{2}\)
3 \(\frac{\pi}{\sqrt{2}}\)
4 \(\frac{1}{\sqrt{2}}\)
Conic Section

119693 Suppose \(Q\) is a point on the circle with centre \(P\) and radius 1 , as shown in the figure; \(R\) is a point outside the circle such that \(Q R=1\) and \(\angle Q R P=2^0\). Let \(S\) be the point where the segment RP intersects the given circle. Then measure of \(\angle \mathrm{RQS}\) equals
original image

1 \(86^{\circ}\)
2 \(87^0\)
3 \(88^{\circ}\)
4 \(89^{\circ}\)
Conic Section

119694 Suppose that the earth is a sphere of radius 6400 kilometers. The height from the earth's surface from where exactly a fourth of the earth's surface is visible, is

1 \(3200 \mathrm{~km}\)
2 \(3200 \sqrt{2} \mathrm{~km}\)
3 \(3200 \sqrt{3} \mathrm{~km}\)
4 \(6400 \mathrm{~km}\)
Conic Section

119688 If \((3, \lambda)\) and \((5,6)\) are the conjugate point of \(\mathbf{x}^2+\mathbf{y}^2=3\), then \(\lambda\) is equal to

1 2
2 -2
3 1
4 -1
Conic Section

119692 Let \(A B\) be a line segment of length 2 . Construct a semicircle \(S\) with \(A B\) as diameter. Let \(C\) be the midpoint of the arcAB. Construct another semicircle \(T\) external to the triangle \(A B C\) with chord \(A C\) as diameter. The area of the region inside the semicircle \(T\) but outside \(S\) is

1 \(\frac{\pi}{2}\)
2 \(\frac{1}{2}\)
3 \(\frac{\pi}{\sqrt{2}}\)
4 \(\frac{1}{\sqrt{2}}\)
Conic Section

119693 Suppose \(Q\) is a point on the circle with centre \(P\) and radius 1 , as shown in the figure; \(R\) is a point outside the circle such that \(Q R=1\) and \(\angle Q R P=2^0\). Let \(S\) be the point where the segment RP intersects the given circle. Then measure of \(\angle \mathrm{RQS}\) equals
original image

1 \(86^{\circ}\)
2 \(87^0\)
3 \(88^{\circ}\)
4 \(89^{\circ}\)
Conic Section

119694 Suppose that the earth is a sphere of radius 6400 kilometers. The height from the earth's surface from where exactly a fourth of the earth's surface is visible, is

1 \(3200 \mathrm{~km}\)
2 \(3200 \sqrt{2} \mathrm{~km}\)
3 \(3200 \sqrt{3} \mathrm{~km}\)
4 \(6400 \mathrm{~km}\)
Conic Section

119688 If \((3, \lambda)\) and \((5,6)\) are the conjugate point of \(\mathbf{x}^2+\mathbf{y}^2=3\), then \(\lambda\) is equal to

1 2
2 -2
3 1
4 -1
Conic Section

119692 Let \(A B\) be a line segment of length 2 . Construct a semicircle \(S\) with \(A B\) as diameter. Let \(C\) be the midpoint of the arcAB. Construct another semicircle \(T\) external to the triangle \(A B C\) with chord \(A C\) as diameter. The area of the region inside the semicircle \(T\) but outside \(S\) is

1 \(\frac{\pi}{2}\)
2 \(\frac{1}{2}\)
3 \(\frac{\pi}{\sqrt{2}}\)
4 \(\frac{1}{\sqrt{2}}\)
Conic Section

119693 Suppose \(Q\) is a point on the circle with centre \(P\) and radius 1 , as shown in the figure; \(R\) is a point outside the circle such that \(Q R=1\) and \(\angle Q R P=2^0\). Let \(S\) be the point where the segment RP intersects the given circle. Then measure of \(\angle \mathrm{RQS}\) equals
original image

1 \(86^{\circ}\)
2 \(87^0\)
3 \(88^{\circ}\)
4 \(89^{\circ}\)
Conic Section

119694 Suppose that the earth is a sphere of radius 6400 kilometers. The height from the earth's surface from where exactly a fourth of the earth's surface is visible, is

1 \(3200 \mathrm{~km}\)
2 \(3200 \sqrt{2} \mathrm{~km}\)
3 \(3200 \sqrt{3} \mathrm{~km}\)
4 \(6400 \mathrm{~km}\)
Conic Section

119688 If \((3, \lambda)\) and \((5,6)\) are the conjugate point of \(\mathbf{x}^2+\mathbf{y}^2=3\), then \(\lambda\) is equal to

1 2
2 -2
3 1
4 -1
Conic Section

119692 Let \(A B\) be a line segment of length 2 . Construct a semicircle \(S\) with \(A B\) as diameter. Let \(C\) be the midpoint of the arcAB. Construct another semicircle \(T\) external to the triangle \(A B C\) with chord \(A C\) as diameter. The area of the region inside the semicircle \(T\) but outside \(S\) is

1 \(\frac{\pi}{2}\)
2 \(\frac{1}{2}\)
3 \(\frac{\pi}{\sqrt{2}}\)
4 \(\frac{1}{\sqrt{2}}\)
Conic Section

119693 Suppose \(Q\) is a point on the circle with centre \(P\) and radius 1 , as shown in the figure; \(R\) is a point outside the circle such that \(Q R=1\) and \(\angle Q R P=2^0\). Let \(S\) be the point where the segment RP intersects the given circle. Then measure of \(\angle \mathrm{RQS}\) equals
original image

1 \(86^{\circ}\)
2 \(87^0\)
3 \(88^{\circ}\)
4 \(89^{\circ}\)
Conic Section

119694 Suppose that the earth is a sphere of radius 6400 kilometers. The height from the earth's surface from where exactly a fourth of the earth's surface is visible, is

1 \(3200 \mathrm{~km}\)
2 \(3200 \sqrt{2} \mathrm{~km}\)
3 \(3200 \sqrt{3} \mathrm{~km}\)
4 \(6400 \mathrm{~km}\)