Understanding Reference Angles and Trigonometric Functions

What is the reference angle for sine of 135 degrees?

• 45 degrees

• 60 degrees

• 90 degrees

• 30 degrees

In which quadrant does the angle 135 degrees lie?

• Quadrant II

• Quadrant I

• Quadrant III

• Quadrant IV

What is the reference angle for cosine of 4π/3?

• π/2

• π/3

• π/4

• π/6

What is the sign of cosine in the third quadrant?

• Zero

• Positive

• Negative

• Undefined

What is the reference angle for tangent of 14π/3?

• π/2

• π/6

• π/4

• π/3

In which quadrant does the angle 14π/3 lie after one full revolution?

• Quadrant I

• Quadrant III

• Quadrant II

• Quadrant IV

What is the value of tangent of 14π/3?

• -1

• 1

• -√3

• √3

What is the reference angle for secant of -17π/4?

• π/6

• π/4

• π/3

• π/2

What is the sign of secant in the fourth quadrant?

• Undefined

• Positive

• Negative

• Zero

What is the value of secant of -17π/4?

• 2

• 1/2

• 1

• √2