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

tan70^@-tan20^@-2tan40^@=

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

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 ?

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

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

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

If 2tan10^0+t a n 50^0=2x ,\ "tan"20^0+"tan"5060=2"y","\ "2"tan"10^0+"tan"7060=2"w\ and\ tan"20^0+"tan"70^0=2"z", then which of the following is/are true. a. z > w > y > x b. \ w=x+y c. \ 2y=z d. z+x=w+y

tan 10^(@)*tan20^(@)*tan30^(@)*tan40^(@)*tan50^(@)*tan60^@tan70^(@)*tan80^(@)=