How to evaluate a limit with secant

The video tutorial explains how to calculate the secant of an angle using the unit circle. It begins by introducing the secant function and its formula, followed by an explanation of the unit circle and its coordinates. The tutorial then demonstrates the calculation of the secant of zero, emphasizing the use of the unit circle. The video concludes with a summary of basic secant calculations.

What is the initial step when calculating the secant of an angle?

• Determine the tangent of the angle

• Plug the angle into the secant function

• Identify the sine of the angle

• Find the cosine of the angle

Where is the position of zero on the unit circle?

• At 0 degrees

• At 180 degrees

• At 270 degrees

• At 90 degrees

What are the coordinates of the point at 0 radians on the unit circle?

• (0, 1)

• (1, 0)

• (0, -1)

• (-1, 0)

How is the secant of an angle calculated using the unit circle?

• The X coordinate itself

• The Y coordinate itself

• 1 divided by the Y coordinate

• 1 divided by the X coordinate

What is the value of the secant of 0?

• -1

• 0

• 1

• Undefined