Learning to determine co terminal angles by subtracting 2pi twice

The video tutorial explains coterminal angles, focusing on their properties and how to find them both graphically and algebraically. It emphasizes finding the smallest positive and negative coterminal angles, using examples to illustrate the process. The tutorial concludes with a confirmation of the calculations.

What is a coterminal angle?

• An angle that is always positive

• An angle that shares the same initial and terminal sides with another angle

• An angle that is always negative

• An angle that is less than 90 degrees

How can you find coterminal angles algebraically?

• By taking the square root of the angle

• By dividing the angle by 2π

• By adding or subtracting multiples of 2π

• By multiplying the angle by 2π

Why is it important to find the smallest positive and negative coterminal angles?

• To make the angle larger

• To avoid using a calculator

• To simplify calculations and comparisons

• To ensure the angle is always positive

What is the smallest positive coterminal angle for 11π/4?

• 5π/4

• 7π/4

• 3π/4

• 9π/4

What is the smallest negative coterminal angle for 11π/4?

• -7π/4

• -5π/4

• -3π/4

• -9π/4