Grade Select GradeAlgebra
If z= i log(2-√3) then the value of cos(z) will be - i
- 2i
- 1
- 2
If z= i log(2-√3) then the value of cos(z) will be
- i
- 2i
- 1
- 2
1 Answer
noogler
Approved Tutor Answer11 Years agowe know that cosz=eiz+e-iz/2
z=i log (2-root 3)...........iz=-log(2-root3)=log(2+root3)
eiz=2+root3 ….......SUSTITUTE eiz value in cosz
simplfy it, u get cosz=2
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