Trig Review Flashcards
1
Q
Sec Θ
A
1/cos Θ
2
Q
Tan Θ
A
Sin Θ/cos Θ
3
Q
Cot Θ
A
1/tan Θ
4
Q
Csc Θ
A
1/sin Θ
5
Q
2) Cot Θ
A
Cos Θ/sin Θ
6
Q
2) Tan Θ
A
1/cot Θ
7
Q
Sin Θ
A
1/csc Θ
8
Q
Cos Θ
A
1/sec Θ
9
Q
Natural Numbers
A
1,2,3,4…
10
Q
Whole number
A
0,1,2,3,4…
11
Q
Integers
A
-3.-2,-1,0,1,2,3…
12
Q
Rational Numbers
A
Any real number that can be expressed exactly as a fraction numerator is an integer and whose denominator is a nonzero integers. Also, irrational number is there any terminating decimals or a repeating decimals.
2/3 1.375 0.3333
13
Q
Irrational Numbers
A
Cannot be written as a function with an integer a numerator and a denominator. Also, in decimal form or nonrepeating, Non-terminating decimals.
√2 and n
14
Q
Open interval
A
(a,b)
15
Q
Closed interval
A
[a,b]
16
Q
Half open interval
A
(a,b]
17
Q
Infinite interval
A
(∞,a)
18
Q
Complex number
A
Not a real number, value 𝒾 is used
𝒾^2= -1 or √-1
