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Show that: cos(2tan^(-1)(1/7))=sin(4tan^...

Show that: `cos(2tan^(-1)(1/7))=sin(4tan^(-1)(1/3))`

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Show that : cos(2\ tan^(-1)1/7)=sin(4\ tan^(-1)1/3)

Show that cos(2"tan"^(-1)1/7)=sin(4"tan"^(-1)1/3) .

Show that : cos(2\ tan^(-1)(1/7 ))=sin(4\ tan^(-1) (1/3) )

Show that cos(2"Tan"^(-1)1/7)=sin(4"Tan"^(-1)1/3)

Show that cos(2Tan^(-1).(1)/(7))=sin(2Tan^(-1).(3)/(4))

Prove that cos(2Tan^(-1)1/7) = sin(4Tan^(-1)1/3)

Prove that cos(2tan^-1 1/7) = sin ( 4 tan^-1 1/3)

Directions (Q. Nos. 16-25) Prove the following "cos"(2"tan"^(-1)1/(7))="sin"(4"tan"^(-1)1/(3)) .

Show that : cos(2tan^-1frac{1}{7})=sin(4tan^-1frac{1}{3})