Inverse Circular Functions

If

tan(inverse)(x+2/x)-tan(inverse)4/x-tan(inverse)(x-2/x)=0

then x=............ y=...........

(M.L.Khanna Page 464 Problem No.37a)

2 Answers

37
Soumak Roy ·

What is y ?? There is no mention of any variable y in the sum .. And is x=21/2 ?

37
Soumak Roy ·

Then i dont know what y is, so i cant answer that, but is x=√2?

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