4.1 and 4.2
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What is an angle in standard position?
Which way do the positive angles rotate?
  vertex must be at origin
  initial side must be on the x axis
  counter clockwise

What is a coterminal angle?
two or more angles that terminate in the same place

What is the sum of complements and supplements?

What is the formula for radian measure?
 where theta is the central angle, s is the length of the intersected arc, and r is the radius

What is the relationship between degrees and radians?
 360^{o}= 2
 or 180^{o}= pi

What is the formula for finding length of the circular arc?
 Theta must be in radians. So you have to convert it first by doing pi/ 180.

What is the formula for angular speed?

What is the formula for linear speed?
, where t is time

What are the six trig functions?
 sine= y/r csc=r/y
 cos= x/r sec= r/x
 tan= y/x cot= x/y

What is the domain of sine and cosine? Range?
 domain: all real numbers
 range: the set of real numbers from 1 to 1 inclusive

What are the only two even trig functions?
cos and sec

What are the reciprocal identities?
 sin= 1/ csc
 cos= 1/ sec
 tan= 1/ cot
 csc= 1/ sin
 sec= 1/ cos
 cot= 1/ tan

What are the quotient identities?
 tant= sint/ cost
 cott= cost/ sint

What are the pythagorean identities?
 sin^{2}t+ cos^{2}t= 1
 1+ tan^{2}t= sec^{2}t
 1+ cot^{2}t= csc^{2}t

How do you find periodic properties of sine and cosine?
 sin = sint
 cos ()= cost

What are the periodic properties of tangent and cotangent?