1
Q
Right triangle
A
A triangle in which one angle is a right angle.
2
Q
Hypotenuse
A
Side opposite the right angle
3
Q
Acute angle
A
Angle less than 90°
4
Q
(Sides of triangle) Sin=
A
opp/hyp
5
Q
(Sides of triangle) Cos=
A
adj/hyp
6
Q
(Sides of triangle) Tan=
A
opp/adj
7
Q
(Sides of triangle) Csc=
A
hyp/opp
8
Q
(Sides of triangle) sec=
A
hyp/adj
9
Q
(Sides of triangle) cot=
A
adj/opp
10
Q
Reciprocal csc =
A
1/sin
11
Q
Reciprocal sec=
A
1/cos
12
Q
Reciprocal cot=
A
1/tan
13
Q
Quotient tan=
A
sin/cos
14
Q
Quotient cot=
A
cos/sin
15
Q
Complimentary angles:
A
Sum equals 90°
16
Q
sin squared theta + cos squared theta =
A
1
17
Q
tan squared theta + 1 =
A
sec squared theta
18
Q
cot squared theta + 1 =
A
csc squared theta
