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tan 25^(@) tan 15^(@) + tan15^(@) tan50...

`tan 25^(@) tan 15^(@) + tan15^(@) tan50^(@) + tan 25^(@) tan50^(@)` किसके बराबर है ?

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tan20^(@)+2tan50^(@)=

tan15^(@) + tan 75^(@)=

tan 20^(@) + tan 25^(@) +tan 20^@ tan25^(@)=

tan50^(@)-2tan10^(@)=

Prove that, tan25^(@).tan15^(@)+tan15^(@)tan50^(@)+tan25^(@)tan50^(@)=1 .

tan10^(@)-tan50^(@)+tan70^(@)=?

Find tan15^(@).tan25^(@).tan45^(@).tan65^(@).tan75^(@) .

tan10^(@)-tan50^(@)+tan70^(@)

Tan20^(@) + Tan25^(@) + Tan20^(@)Tan25^(@)