How To Find the Angle Given an Equation and Constraint

The video tutorial explains how to determine the angle X by understanding the relationship between secant and cosine. It covers the concept of cosine as a reciprocal and demonstrates how to create a triangle to find the cosine of 1/2. The tutorial also guides on finding reference angles and their related angles using trigonometric functions.

What is the relationship between secant and cosine?

• Secant is the inverse of cosine.

• Secant is the square of cosine.

• Secant is the reciprocal of cosine.

• Secant is the same as cosine.

How can cosine be represented on the unit circle?

• As the y-coordinate.

• As the hypotenuse.

• As the x-coordinate.

• As the angle.

What angle corresponds to a cosine value of 1/2?

• 60 degrees

• 45 degrees

• 90 degrees

• 30 degrees

Which method can be used to find the angle where cosine equals 1/2?

• Finding the tangent of the angle.

• Using the sine function.

• Creating a triangle with adjacent over hypotenuse.

• Using a calculator directly.

What is the first step in finding the reference angle?

• Determine the sine value.

• Use a calculator.

• Identify the quadrant.

• Calculate the tangent.