Question
Wed September 16, 2009 By:

Trigonometry

Expert Reply
Wed October 21, 2009

Given equation is 4cosx - 3secx = tanx

4 cos2 x-3=sinx

⇒4 -4sin2 x-3 =sin x

⇒4sin2 x+sin x -1=0

sin x = (-117)/8

or x = sin-1(-117)/8

 

 

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