" 5.Prove that "tan36^(@)+tan9^(@)+tan36...

" 5.Prove that "tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

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Prove that: i) tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

Prove that: i) tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

tan9^(@)+tan36^(@)+tan9^(@)tan36^(@)=1

tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=

tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=?

Prove that: (a) tan 20^(@)tan40^(@)tan60^(@)tan 80^(@)=3 (b) tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=4

Prove that tan 9^(@) - tan 27^(@) -tan 63^(@) + tan 81^(@) =4

tan9^(0)-tan27^(0)-tan63^(@)+tan81^(@)

tan 9^(@) - tan 27^(@) - tan 63^(@) + tan 81^(@) =

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