Verifying Trig Identities Flashcards
1
Q
sin²(u) + cos²(u) = ?
A
1
2
Q
1 + tan²(u) = ?
A
sec²(u)
3
Q
1 + cot²(u) = ?
A
csc²(u)
4
Q
sin(u) = ?
A
1/csc(u)
5
Q
cos(u) = ?
A
1/sec(u)
6
Q
tan(u) = ?
A
- 1/cot(u)
- sin(u)/cos(u)
7
Q
csc(u) = ?
A
1/sin(u)
8
Q
sec(u) = ?
A
1/cos(u)
9
Q
cot(u) = ?
A
- 1/tan(u)
- cos(u)/sin(u)
10
Q
sin(a + b) = ?
A
sin(a)cos(b) + cos(a)sin(b)
11
Q
cos(a + b) = ?
A
cos(a)cos(b) - sin(a)sin(b)
12
Q
tan(a + b) = ?
A
tan(a) + tan(b)/1 - tan(a)tan(b)
13
Q
sin(a - b) = ?
A
sin(a)cos(b) - cos(a)sin(b)
14
Q
cos(a - b) = ?
A
cos(a)cos(b) + sin(a)sin(b)
15
Q
tan(a - b) = ?
A
tan(a) - tan(b)/1 + tan(a)tan(b)
