Posted by Emily on Sunday, June 21, 2009 at 8:55pm.
I need to find all solutions of the given equations for the indicated interval. Round solutions to three decimal places if necessary.
1.) 3sin(x)+1=0, x within [0,2pi)
2.) 2sin(sq'd)(x)+cos(x)1=0, x within R
3.) 4sin(sq'd)(x)4sin(x)1=0, x within R
4.) sin(x)+1=cos(x), x within [0, 2pi) check for extraneous solutions.

trig  bobpursley, Sunday, June 21, 2009 at 9:07pm
on 2 remember that sin^2 x = 1cos^2 x, then use the quadratic formula,or factor.
on 3, factor
on 4,try squaring both sides, then substitue to get rid of the cos^2
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