" (e) "tan10^(@)-tan50^(@)+tan70^(@)=sqrt(3)

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

(tan80^(@)-tan10^(@))/(tan70^(@))

(tan80^(@)-tan10^(@))/(tan70^(@))

Prove that : tan 70^(@)+ tan 10^(@)- tan 50^(@)= sqrt(3)

Prove that, tan 70^(@) - tan 50^(@) + tan 10^(@) = sqrt3

Without using trigonometric tables , prove that : (i) tan20^(@)tan40^(@) tan45^(@)tan50^(@)tan70^(@)=1 (ii) tan1^(@) tan2^(@)tan60^(@)tan88^(@)tan89^(@)=sqrt(3) (iii) cot5^(@)cot10^(@)cot30^(@)cot80^(@)cot85^(@)=sqrt(3) (iv) 4sin10^(@)sin20^(@)sin30^(@)sec70^(@)sec80^(@)=2

Without using trigonometric tables , prove that : (i) tan20^(@)tan40^(@) tan45^(@)tan50^(@)tan70^(@)=1 (ii) tan1^(@) tan2^(@)tan60^(@)tan88^(@)tan89^(@)=sqrt(3) (iii) cot5^(@)cot10^(@)cot30^(@)cot80^(@)cot85^(@)=sqrt(3) (iv) 4sin10^(@)sin20^(@)sin30^(@)sec70^(@)sec80^(@)=2

tan 70^(@) - tan 20^(@)=

The value of tan10^(@)tan50^(@)tan70^(@) is