Learn to evaluate for the secant of an angle without using a triangle

The video tutorial explains reciprocal functions, focusing on the cosine and secant of π/3. It covers two methods: using a 30-60-90 triangle and the unit circle. The secant of 60 degrees is calculated as the hypotenuse over the adjacent side, and the unit circle method involves identifying the cosine of 60 degrees as the x-coordinate. Both methods lead to the same result, demonstrating different approaches to understanding trigonometric functions.

What is the reciprocal of cosine known as?

• Tangent

• Secant

• Cosecant

• Cotangent

In a 30-60-90 triangle, what is the relationship of the secant of 60 degrees?

• Opposite over Hypotenuse

• Adjacent over Hypotenuse

• Hypotenuse over Adjacent

• Opposite over Adjacent

How can the cosine of 60 degrees be found using the unit circle?

• By using the X coordinate

• By using the Y coordinate

• By using the radius

• By using the tangent line

What is the value of secant for π/3 or 60 degrees?

• 2

• 1

• 1/2

• √3

Which method can be used to understand secant besides using triangles?

• Using the unit circle

• Using the Pythagorean theorem

• Using the sine function

• Using the tangent function