Unit Circle Trigonometry (Part 1) Review

Question 1

What is the amplitude of this function?

Accepted Answer

2

Question 2

Evaluate: \sin\left(300\right)

Accepted Answer

-\frac{\sqrt{3}}{2}

Question 3

Determine the period of the function: y=\frac{1}{4}\sin\left(\pi x+1\right)

Accepted Answer

2

Question 4

Evaluate: \cos\left(\frac{5\pi}{4}\right)

Accepted Answer

-\frac{\sqrt{2}}{2}

Question 5

If you were to write an equation for this graph, it would be easier to use a cosine function.

Accepted Answer

False

Question 6

Evaluate: 	an\left(120ight)

Accepted Answer

-\sqrt{3}

Question 7

What is the period of this function?

Accepted Answer

12π

Question 8

What is the equation for the midline of this graph?

Accepted Answer

y = 3

Question 9

The point P=\left(\frac{1}{7},y\right) lies on the unit circle shown below. Which equation could you use to find y?

Accepted Answer

\left(\frac{1}{7}\right)^2+y^2=1

Question 10

Select the expression that is equivalent to 	an x\cdot\cos x

Accepted Answer

\sin x

Question 11

What is the b-value for the equation of this function?

Accepted Answer

b = 1/6

Question 12

The point P=\left(\frac{1}{7},y\right) lies on the unit circle shown below. What is the value of y in simplest form?

Accepted Answer

y=-\frac{4\sqrt{3}}{7}

Question 13

Alex wants to solve \sin\left(x\right)=-\frac{4}{5}. What should he put in his calculator?

Accepted Answer

\sin^{-1}\left(-\frac{4}{5}\right)

Question 14

Evaluate: \csc\left(30\right)

Accepted Answer

2

Question 15

In what quadrant is 	an x>0 and \sec\left(xight)<0

Accepted Answer

Quadrant III

Questions 15