Using coterminal angles to evaluate for sine

The video tutorial explains how to solve trigonometric problems by focusing on finding angles, particularly using coterminal angles. It begins with an introduction to the problem, followed by a detailed explanation of coterminal angles and how to calculate the smallest positive or negative coterminal angle. The tutorial also covers graphing techniques and reflections, emphasizing the sine function and its coordinates.

What is the first step in solving a trigonometric problem involving angles?

• Use a calculator to find the sine

• Find the angle in terms of π

• Calculate all six trigonometric functions

• Convert the angle to degrees

How can you find the smallest positive or negative coterminal angle?

• Subtract 2π from the angle

• Add 2π to the angle

• Multiply the angle by 2π

• Divide the angle by 2π

What is the equivalent of 2π in terms of π/3?

• 12π/3

• 6π/3

• 3π/3

• 9π/3

What is the coterminal angle of 20π/3 after subtracting 6π/3 multiple times?

• 2π/3

• 14π/3

• 0

• 8π/3

What is the sine of 2π/3?

• -1/2

• sqrt(3)/2

• -sqrt(3)/2

• 1/2