Unit 11 Flashcards
1
Q
scalar quantities
A
quantified with a single real number
2
Q
magnitude
A
√(terminal-origin)^2 + (terminal-origin)^2
3
Q
unit vector
A
v/||v||
4
Q
vector v given magnitude and angle
A
< ||v||cosA, ||v||sinA >
5
Q
dot product
A
u(v) + u(v)
6
Q
orthogonal or perpendicular must equal
A
0
7
Q
determine the angle
A
cosA^1 (u(v) / ||u|| times ||v||)
8
Q
sin(A+B)
A
sinAcosB + cosAsinB
9
Q
cos(A+B)
A
cosAcosB - sinAsinB
10
Q
tan(A+B)
A
(tanA + tanB) / 1 - tanAtanB
11
Q
sin2A
A
2sinAcosA
12
Q
cos2A
A
cos^2A + sin^2A
13
Q
tan2A
A
2tanA / 1 - tan^2A
14
Q
sin(A/2)
A
+-√1-cosA / 2
15
Q
cos(A/2)
A
+-√1+cosA / 2
