solve the equation:

Asked by  | 1st Oct, 2008, 08:39: PM

Expert Answer:

tan2x + (1-3)tanx - 3 =0

tanx ( tanx+1) - 3 (tanx+1) =0

(tanx +1) ( tanx - 3) =0

tanx = -1  ==> x = -45

and tanx = 3  ==> x=60

Answered by  | 30th Nov, 2008, 02:09: AM

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