Evaluate for secant when given an angle in radians

The video tutorial explains how to locate angles on the unit circle, specifically focusing on 3π/2. It covers the basics of the unit circle, the significance of π, π/2, and 3π/2, and how to find the secant of an angle using the unit circle. The tutorial concludes with a discussion on the undefined nature of secant at certain points and addresses questions related to the topic.

What is the angle 3π/2 equivalent to on the unit circle?

• 2π

• π

• π/2

• 3π/2

Which coordinate corresponds to the angle 3π/2 on the unit circle?

• (-1, 0)

• (0, -1)

• (0, 1)

• (1, 0)

How is the secant of an angle defined in terms of cosine?

• Secant is the same as cosine

• Secant is the tangent of the angle

• Secant is the reciprocal of sine

• Secant is the reciprocal of cosine

Why is the secant of 3π/2 undefined?

• Because sine is zero at this angle

• Because the angle is not on the unit circle

• Because cosine is zero at this angle

• Because tangent is zero at this angle

What must you do if a point is not on the unit circle?

• Ignore the point

• Estimate the value

• Draw a right triangle

• Use a calculator