Exploring Trig Ratios and the Unit Circle

What is the cosine of negative PI over 2?

• 0

• 1

• -1

• Undefined

What is the tangent of negative PI over 2?

• 0

• 1

• Undefined

• -1

What is the cosecant of negative PI over 2?

• 1

• Undefined

• 0

• -1

What is the sine of 2 PI?

• -1

• 1

• 0

• Undefined

What is the secant of 2 PI?

• Undefined

• 0

• 1

• -1

What is the cosecant of 2 PI?

• Undefined

• 1

• -1

• 0

Given sine of a is negative root 119 over 12 in Quadrant 3, what is secant of a?

• 12/5

• -12/5

• -5/12

• 5/12

In which quadrant is the sine value always negative?

• Quadrant IV

• Quadrant I

• Quadrant III

• Quadrant II

What is the cosecant of a, given secant of a is 14 over the square root of 171 in Quadrant I?

• 14/5

• 5/14

• -14/5

• -5/14

How is the hypotenuse related to the opposite and adjacent sides in a right triangle?

• Hypotenuse equals the sum of opposite and adjacent sides

• Hypotenuse is the square root of the sum of the squares of opposite and adjacent sides

• Hypotenuse is the square of the sum of opposite and adjacent sides

• Hypotenuse is half the sum of opposite and adjacent sides