Precalculus Semester 2 24-25 Final Exam

Which function is the reciprocal of cos (x)?

• sin (x)

• tan (x)

• sec (x)

The locus of the points equidistant to a point and a line is a ...

• parabola

• ellipse

• hyperbola

• cardioid

How many radians represent a full turn?

• 360

• 180

• π

• 2π

A surveyor establishes a reference point, R, and a reference line. Then the surveyor measures the distance from the reference point to two other points P and Q and measures the angles from P and Q to the reference line. What is the distance (to the nearest tenths) QR in the diagram below ?

• [-1, 1]

• [0, 1]

• [0, 2]

• [-2, 2]

• (5, 3)

• (-3, -5)

• (3, 5)

• (-5, -3)

In a parabola, the axis of symmetry and the directrix are ...

• parallel

• perpendicular

• at an acute angle

• at an obtuse angle

What is true regarding the Law of Cosines?

• It only works with right triangles.

• It is only useful for acute triangles.

• It can only be used when an angle and it's opposite side are known.

• It can be used when all three sides are known.

The locus of all points with a constant difference of the distances to two fixed points, called foci, is ...

• a parabola

• a circle

• a hyperbola

• an ellipse

• TRUE

• FALSE