Trigonometry Flashcards
1
Q
1 is equal to
A
sin^2 (A) + cos^2 (A)
2
Q
tan (A)
A
sin (A) / cos (A)
3
Q
cot (A)
A
cos (A) / sin (A)
4
Q
sin (A+B)
A
sin(A)cos(B) + cos(A)sin(B)
given in formula book
5
Q
sin(A-B)
A
sin(A)cos(B) - cos(A)sin(B)
given in formula book
6
Q
cos(A+B)
A
cos(A)cos(B) - sin(A)sin(B)
given in formula book
7
Q
cos(A-B)
A
cos(A)cos(B) + sin(A)sin(B)
given in formula book
8
Q
tan(A+B)
A
[tan(A) + tan(B)] / [1 - tan(a)tan(B)]
given in formula book
9
Q
tan(A-B)
A
[tan(A)-tan(B)] / [1 - tan(A)tan(B)]
given in formula book
10
Q
sin(2A)
A
2sin(A)cos(A)
11
Q
cos(2A)
A
cos^2(A) - sin^2(A)
2cos^2(A) - 1
1 - 2sin^2(A)
12
Q
tan(2A)
A
[2tan(A)] / [1-tan^2(A)]
13
Q
sec^2 (A)
A
tan^2 (A) + 1
14
Q
cosec^2 (A)
A
1 + cot^2 (A)
