Math, asked by indreshchauhan204, 1 year ago

sin5x=cos3x ,find the value of x.

Answers

Answered by Anonymous
1
   sin5x.cos3x=sin6x.cos2x                                             

   Multiplying both the sides by 2

   2sin5x.cos3x=2sin6x.cos2x                                        

   sin(5x+3x)+sin(5x-2x)=sin(6x+2x)+sin(6x-2x)

   sin8x+sin2x=sin8x+sin4x    

   sin2x-sin4x=0 

   2sin(2x-4x/2)cos(2x+4x/2)                                          

   -2sinxcos3x=0                        

    X=npi         Or 3x=(2n+1)pi/2 -> x=(2n+1)pi/6

       Hope this helps you!  
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