` (tan 60^@-tan 30^@)/(1+tan 60^@tan 30^@) = tan 30`

(tan60^(@)-tan30^(@))/(1+tan60^(@)tan30^(@))=tan30

Show that (tan 60^(@)-tan30^(@))/(1+tan 60^(@) tan 30^(@))= tan 30^(@) .

Show that (i) cos60^(@)*cos30^(@)-sin60^(@)*sin30^(@)=cos90^(@) (ii) cos60^(@)=1-2sin^(2)30^(@)=2cos^(2)30^(@)-1 (iii) (tan60^(@)-tan30^(@))/(1+tan60^(@)*tan30^(@))=tan30^(@)

Find the value of: (tan 60^@- tan 30^@)/(1+ tan60^@ tan 30^@)+cos 60^@ cos30^@+ sin 60^@ sin30^@ .

Find the value of (tan60^(@)-tan30^(@))/(1+tan60^(@)tan30^(@))and tan30^(@). "what do you observe"?

(tan 60^(@) - tan 30^(@))/(1 + tan 60^(@) tan 30^(@)) equal

Find (in each case, given below) the value of x, if : tan x = (tan 60^(@) - tan 30^(@))/(1 + tan 60^(@) tan 30^(@))

Evaluate (tan60^(@)-tan30^(@))/(1+tan60^(@)tan30^(@)) .

Evaluate (tan60^(@)-tan30^(@))/(1+tan60^(@)tan30^(@)) .

Find the value : (tan^2 60^@+tan30^@)/(1+tan^2 60^@+tan30^@)+cos 60^@ cos30^@ -sin60^@ - sin30^@