The figure is a circle with centre O and a chord PQ subtending an angle of 70° at the centre, O.
The value of the angle marked θ is:
35°.
70°.
55°.
20°.
A and B are two sets such that A = {3, 4} B = {x, y), the cartesian product A × B is:
{(3, x), (3, y),(4, x),(4, y)}.
(3x, 4y).
(3,x), (3.y), (4.x), (4,y).
{(3, x), (4, y)}.
The figure represents a Cartesian plane.
The quadrant in which Q is found is:
1st quadrant.
2nd quadrant.
3rd quadrant.
4th quadrant.
The lines with equations y = m₁x + c and y = m₂x + k are perpendicular if:
2m₁ = m₂.
m₁m₂ = -1.
m₁m₂ = 1.
m₁ = m₂.
On the Cartesian plane, the line y = 0 is called the:
y-axis.
Origin.
Ordinate.
x-axis.
