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#1 Help Me ! » trig problem » 2007-07-13 20:17:58

bubbagee
Replies: 1

i've been stumped on these 2 for a couple days, please help me!

2 cos^2 X - sin X -1 = 0

and

2 cos 2x= 1-cos x

find all solutions on the interval 0 ?x ?2pi rad or 0 ?x ?360 deg.

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