- #1
spynjr
- 5
- 0
Homework Statement
Find all angles x, -pi <= x <= pi which satisfy sin4x = 1
Homework Equations
The Attempt at a Solution
Solved x, ie
4x = sin^-1(1)
4x = pi/2
x = pi/8
Sine is positive for angles in quadrants one and two, so there's one other angle which is in quadrant two?
x = pi - pi/8
x = 7pi/8
Final answer, x = pi/8, 7pi/8
Just not feeling confident. There are about five other similar questions, ie solving x between -pi and pi