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#1 2012-10-24 12:24:40
- skylor
- Guest
Trig Interval
Use an identity to solve each equation on the interval (0,2pi)
2cos^2x+sin x -1 = 0
#2 2012-10-24 19:33:10
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,646
Re: Trig Interval
hi skylor
You can use
to eliminate the cos from the expression and make a quadratic in sin.
Bob
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