Evaluate using reference angles

What is the first step in finding the tangent of an angle?

• Use a calculator

• Find the cosine of the angle

• Sketch the angle

• Calculate the sine of the angle

In which direction do you move to sketch a positive angle?

• Vertically

• Clockwise

• Counterclockwise

• Horizontally

What is the importance of the unit circle in trigonometry?

• It helps in finding the area of a circle

• It is used to determine coordinate points for angles

• It is used to measure angles in radians

• It helps in calculating the perimeter of a circle

What is the reflection of the point (1/2, sqrt(3)/2) in the fourth quadrant?

• (1/2, sqrt(3)/2)

• (-1/2, sqrt(3)/2)

• (1/2, -sqrt(3)/2)

• (-1/2, -sqrt(3)/2)

How do you calculate the tangent of an angle using coordinates?

• Divide x by y

• Multiply x and y

• Add x and y

• Divide y by x

What is the reference angle for 300 degrees?

• 120 degrees

• 60 degrees

• 30 degrees

• 90 degrees

Why are reference angles useful in trigonometry?

• They help in drawing angles

• They are used to find the area of a triangle

• They simplify the calculation of trigonometric values

• They are used to measure angles in radians