Quizizz Lesson: 9.3 Evaluating Trig Functions

What is the exact value of cosine at 150 degrees?

• -√3 / 2

• √3 / 2

• -√2 / 2

• √2 / 2

What is the exact value of cosine at 150 degrees?

• -√3 / 2

• √3 / 2

• -1 / 2

• 1 / 2

What is the result of the tangent of negative 270 degrees?

• Undefined

• 0

• 1

• -1

What is the approximate value of cosecant of 170 degrees?

• 0.87

• 1.15

• 5.76

• 2.079

What is the cosine of 300 as a fraction?

• -3/2
• 0
• 1/2
• -1/2

Organize these trig functions into the following answers based off your table

Groups:

(a) Equals 1

,

(b) Equals 0

,

(c) Equals 1/2

,

(d) Equals -1/2

• cot(0)

• sin(330)

• cot(45)

• cos(0)

• sin(150)

• cos(120)

• cos(300)

• csc(90)

What function is used to find the angle from a known cosine ratio?

• Inverse Cosine

• Cosecant

• Tangent

• Sine

How do you find the angle from a given cosine ratio using a calculator?

• Direct cosine

• Inverse tangent

• Inverse cosine

• Inverse sine

If the cosecant of an angle is given, which function can directly provide the angle?

• Inverse Tangent

• Inverse Cosecant

• Inverse Sine

• Inverse Cosine

What is the correct approach if the inverse function for cosecant is not available on a calculator?

• Use inverse cosine instead

• Use direct cosecant function

• Use inverse sine of the reciprocal value

• Ignore and use another function