Exam 3 Flashcards
1
Q
Cos^-1(cosx)=X
Cos(cos^-1x)=X
A
Where
[0,pie]
[-1,1]
2
Q
tan^-1(tanx)=X
tan(tan^-1x)=X
A
Where
(-pie/2,pie/2)
(-infinity,infinity)
3
Q
Sec^-1(X)=Y
A
|X| greater than or equal to 1
Y= [0,pie]
4
Q
Csc^-1(X)=Y
A
|X| greater than or equal to 1
Y= [-pie/2,pie/2]
5
Q
Cot^-1(X)=Y
A
X= (-infinity,infinity)
Y= (0,pie)
6
Q
Periodicity of
Sin
Cos
Tan
A
2Kpie
2Kpie
Kpie
7
Q
Cos(-X)
Sec(-X)
A
Cos(X)
Sec(X)
Because even function
8
Q
Law of sines works for
A
SAA
ASA
SSA- can or cannot work
9
Q
Law of cosines works for
A
SAS
SSS
10
Q
Sin^-1(sinx) =X
Sin(sin^-1x) =X
A
Where
[-pie/2,pie/2]
[-1,1]
