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OpenStudy (anonymous):
Please help with Trig-- solve for all radian solutions and x if 0
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OpenStudy (amistre64):
2sincos = sin(2x) sin(x) + sin(2x) = 0 or sin(2x) = sin(-x) 2x = -x
OpenStudy (amistre64):
or we could look at it ohter ways... 2sin = -sin/cos 2 sin = tan sin = tan/2
OpenStudy (amistre64):
-tan/2 .... gotta keep them signs
OpenStudy (anonymous):
Ok
OpenStudy (anonymous):
What happens now?
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