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

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

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The value of tan20^(@)+2 tan50^(@)-tan70^(@), is

The value of tan20^(@)+2 tan50^(@)-tan70^(@), is

The value of tan20^(@)+2 tan50^(@)-tan70^(@), is ................. A) 1 B) 0 C) tan 50^(@) D) tan 70^(@)

2tan10^(@)+tan50^(@)=2x,tan20^(@)+tan50^(@)=2y,2tan50^(@)+tan70^(@)=2w and tan20^(@)+tan70^(@)=2z which of the following is/true

If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan70^(@), 2d=tan20^(@)+tan70^(@) Then which of the following is/are correct ?

If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan70^(@), 2d=tan20^(@)+tan70^(@) Then which of the following is/are correct ?

Prove that tan70^(@)=2tan50^(@)+tan20^(@) .

Prove that tan70^(@)=2tan50^(@)+tan20^(@)

The value of (tan70^(@)-tan20^(@))/(tan50^(@))=