December 02, 2015

December 02, 2015
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Note: HW solutions are posted
Find all values of x with 0 ≤ x < 2π
1. sinx = 0
2. tanx = √3
3. cosx = -1
4. secx = -2
5. cotx = √3
6. sinx = ½
Find all solutions:
3sin2x - 1 = sin2x
5.5 Solving Trig Equations
Find all solutions of 4sinx - 2 = 0
1. Isolate the trig function.
2. Think of the unit circle to
solve for the variable.
3. If you are finding all
solutions, add the period times
n to your solution.
Solve on the interval [0, 2π)
(tan2x - 3)(2cosx + 1) = 0
sin2θ - 2sinθ + 1 = 0
½sinx = 1
December 02, 2015
secx + tanx = 1
csc2x = -cscx + 2
cos3x - cosx = 0
3sin2x - cos2x=0
sin2x = cosx
Mathlab 5.5 Day 1
secxcscx = 2cscx