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The complex numbers s i n x + i c o s 2 x and c o s x − i s i n 2 x are conjugate to each other for

The complex numbers sinx+icos2x and cosxisin2x are conjugate to each other for 

 
 
 
 
 

Grade:12

1 Answers

Govind Sharma
167 Points
3 years ago
z=e 
 
=cosx−isin2x
2
 = 
z
 =e 
−iθ
 
=cosx+isin2x
=sinx+icos2x ....(given)
Comparing coefficients, we get
cosx=sinx and cos2x=sin2x
x= 
4
π
 , 
4
 , 
4
 ... and x= 
8
π
 , 
8
 ..
The intersection of the solution sets is ϕ.
Therefore, there are no values of x satisfying the given conditions.

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