Question

4r² A 4r +1=0.
148.) Find the special roots of the equation 22° -1 = 0. Deduce that
cos io, cos io,cos 1o,cos 9 are the roots of the equation 16t* -- 20tº + 5 = 0.
A CL that the special roots of the equation 10 -1 = 0 are the non-real​

Answer 1

Answer:

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