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cos(2tan^(-1)(1/7)) बराबर है -...

`cos(2tan^(-1)(1/7))` बराबर है -

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If a=cos (2.tan^(-1).(1)/(7))and b = sin (4.tan^(-1).(1)/(3))

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

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

The value of cos[2tan^(-1)(-7)] is

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

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

The value of cos[2 tan^(-1)(-7)] is

((1-tanθ)/(1-cotθ))^2 +1 = ? ((1-tanθ)/(1-cotθ))^2 +1 बराबर है :