"Find all solutions to algebraically." I am having trouble getting very far with this. Thanks. Edit: I have tried messing around with the double argument formulas and turning them into different ratios.
Last edited by ATC; November 21st 2010 at 03:43 PM.
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Hello, ATC! Find all solutions to: . Edit: I have tried messing around with the double argument formulas. Since they are all double angles, why bother? Multiply through by . . . . Factor: . Factor: . And we have: . . . . . . Therefore: .
Thank you...multiplying by cos2x made it so much simpler.