Chapter 3 Trigonometry Review
Trigonometry Ratios:
sin =
opp y
=
hyp r
csc =
1
hyp r
=
=
sin opp y
adj x
=
hyp r
tan =
sin opp y
=
=
cos
adj
x
1
hyp r
=
=
cos adj x
cot =
1
cos
adj
x
=
=
=
tan sin opp y
cos =
sec =
Changing Measures:
Radians to degrees
18
Chapter 6 Combinatorics Review
Terms
Fundamental Counting Principle:
if one item can be selected m ways and another item can be
selected n ways, then the two items can be selected mn ways.
Permutations:
an ordered arrangement of items. The number of permu
Transformations Review
Stretches:
y = af ( x )
a >0
vertical expansion
for every x value, y expands
by a factor of a
0 < a <1
vertical compression
for every x value, y
compresses by a factor of a
y = f (bx )
b >0
horizontal compression
for every y value,