Trigonometry Flashcards
1
Q
Cos(x+(π/2))
A
Negative sinx
2
Q
Cot(x+(π/2))
A
Negative tan
3
Q
Sin(x+(π/2))
A
Cosx
4
Q
(Cos+sin)^2
A
1+2 sin
5
Q
Cos double angle formula for finding sin
A
1-2sin^2
6
Q
Cos double angle formula for finding cos
A
2cos^2-1
7
Q
Formula for angle subtended
A
Diameter over distance
8
Q
The trigonometric identity that isnt negative is from
A
Sine to cosine
9
Q
Cos^2(a) minus cos^2(b)
A
-sin(a+b)sin(a-b)
10
Q
Sin(-x)
A
-sinx
11
Q
Sum of cubes
A
(A + B)(A^2 - AB + B^2)
12
Q
Cos(-x)
A
Cosx
13
Q
Tan(-x)
A
-tanx
14
Q
Cos^2(a) minus cos^2(b)
A
-sin(a+b)sin(a-b)
15
Q
Cos(4x)
A
8sin^4 minus 8sin^2 plus one
