Section 4.1-4.3

1

100

What is the function for cosine? 

Cosine= Adj. / Hyp. 

200

To convert degrees to radians, multiply by

pi rad/ 180 degrees

300

what does tan t equal to on the unit circle? (x,y)

tan t = y/x 

400

Find the point (x,y) on the unit circle. t = 11 pi/ 6

(x,y)= (square root of 3/ 2), (-1/2)

500

A circle has the radius of 2 inches. Find the length of the arc intercepted by 180 degrees. 

s=rO

The length of the arc would be 2 pi. 

2

100

What is the function for tangent? 

Tan= opposite/ adjacent 

200

To convert radians to degrees, multiply by 

180 degrees / pi 

300

What does csc t equal to on the unit circle? (x,y)

csc t = 1/y

400

What is tangent 60? 

square root of 3 

500

Given (4,6) of a right triangle, find tan. 

tan = 4/6

3

100

What is the function for sine? 

Sine= opp./ hyp.

200

What is the pythagorean theorem?

a²+b²=c²

300

What are the special angles for sin 30 degrees?

sin pi/6 = 1/2

400

What is the function value of cosine 225 degrees? 

- square root of 2 

500

Sin delta 3/4 

Find the 3rd side of the triangle. 

square root of 7

4

100

What is the function for cotangent?

cotangent= adj. / opp. 

200

What does sin equal to on the unit circle? (x,y) 

sin t = y

300

What is the reciprocal identity for cot?

cot 0 = 1/ tan 0 

400

Convert 360 degrees into radians

360 * pi/ 180 = 2 pi radians 

500

If cosine is even, what does cos(-35 degrees) equal to? 

cos (35 degrees)

5

100

What is the function for cosecant?

cosecant= hyp./ opp.

200

What does cos t equal on the unit circle? (x,y) 

cos t = y

300

What is the quotient identity for tan? 

tan 0= sin 0/ cos 0 

400

What does cosine 60 equal to? 

cosine pi/ 3 = 1/2 

500

Find - pi on the unit circle. Determine the way it moves and the point (x,y). 

It moves clockwise and the point is (-1, 0).