Understanding Trigonometric Functions

Which of the following is NOT one of the six trigonometric functions?

• Secant

• Cosine

• Sine

• Quadrant

What is the definition of the sine function in terms of a right triangle?

• r divided by y

• r divided by x

• y divided by r

• x divided by r

Which trigonometric function is defined as the reciprocal of sine?

• Cosine

• Secant

• Tangent

• Cosecant

If the sine of an angle is -4/5, what is the cosecant of the same angle?

• -4/5

• 4/5

• 5/4

• -5/4

What is the value of the sine of 90 degrees?

• 0

• 1

• -1

• Undefined

What is the cosine of 90 degrees?

• 1

• 0

• Undefined

• -1

What is the tangent of 90 degrees?

• 0

• 1

• Undefined

• -1

What is the sine of 180 degrees?

• 0

• 1

• -1

• Undefined

What is the cosine of 180 degrees?

• -1

• 0

• 1

• Undefined

What is the tangent of 180 degrees?

• 0

• 1

• Undefined

• -1