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Trig question

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coolcar221:
Show that the equation 2tan2xcosx=3 can be written in the form 2cos2x+3cosx-2=0

nid404:
will answer when I'm back from my classes

astarmathsandphysics:

--- Quote from: coolcar221 on October 06, 2009, 11:35:13 pm ---Show that the equation 2 tan2x cosx = 3 can be written in the form 2 cos2x + 3cosx - 2 = 0

--- End quote ---
Can you check the question?

nid404:
i was wondering.....yes can u please check the question again

cel:
hi..
u jst have to substitute tan2x=sec2x in the eqn

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