Grade 12Algebra
Sir please tell me question no 3 of the attached image
Sir please tell me question no 3 of the attached image
1 Answer
Arun
Dear Pushkar
we 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
Regards
Arun
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