math year 12 ext Flashcards
1
Q
Sin(a+B)
A
SinACosB + CosASinB
2
Q
Sin(A+A)
A
SinACosA +SinACosA
3
Q
Sin2A
A
2SinACosA
4
Q
proj- how do you find the maximum height
A
ley y’=0, solve and sub t back into t(of y)
5
Q
proj- how to find time of flight
A
let y=0, solve for t
6
Q
proj-how to find range
A
let y=0, solve for t and sub t into x
7
Q
proj- how to find speed and how do u find the angle of impact
A
find t and sub the t into velocity and square root the addition of the i and the j component. you do tan -1 (j/i) to find the angle of impact
8
Q
cos2a
A
cos^2a-sin^2a or 2cos^2a -1
9
Q
A
