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OpenStudy (anonymous):
factorise the expresion (1-3cosq-2sin2q)
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OpenStudy (anonymous):
Are you sure this is the right equation?
OpenStudy (anonymous):
yes
OpenStudy (gw2011):
I'm not sure but maybe this will help: sin2q=2sinqcosq 2sin2q=(2)(2sinqcosq)=4sinqcosq 1-3cosq-4sinqcosq=1-cosq(3+4sinq)
OpenStudy (anonymous):
ok
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