Pre-calculus homework help, please?

CaliBaby

New member
Please show me how to get the answers also. Thanks so much!

Find all solutions of the equation in the interval [0,2pi)

1. tan^2 x-6tanx+4=0

2. sec^2 x+6tanx+4=0

3. tan^2 x=3

4. sec4x=2
 
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