sec (17-2x)=-2 find x

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1 Answer

sekant(17-2x)=-2  

sekant=1/kosine, so kosine=-0.5

get invers kosine...angel=120 degree

(17-2x)=120 deg....or(120/57.295779513082320)=2.094395103 radians

-2x=2.094395103  -17=-14.9056049

x=+7.45280245
by

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