- #1
isukatphysics69
- 453
- 8
Homework Statement
Homework Equations
Asin(wt + Φ)
The Attempt at a Solution
let t = 0
Case A:
-.10 = .20sin(Φ)
sin-1(-.10/.20) = Φ = -0.52
Case B:
.10 = .10sin(Φ)
sin-1(.10/.10) = Φ = 1.57Case C:
-.05 = .05sin(Φ)
sin-1(-.05/.05) = Φ = -1.57Case D:
0 = .20sin(Φ)
sin-1(0/.20) = Φ = 0
Now i think i have to determine which ones are in which quadrant. i have to determine whether to subtract pi or not. But how to determine?