`cot10 5^(@)-tan10 5^(@)=2sqrt(3)`

cot105^(@)-tan105^(@)=2sqrt(3)

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

cot5^(@)-tan5^(@)-2tan10^(@)-4tan20^(@)-8cot40 is equal to -

If cos18^(@)-sin18^(@)=sqrt(2)sinA . Then value of tan5A+cot5A+sin5A+cos5A is :

Exact value of tan200^(@)(cot10^(@)-tan10^(@)) is

exact value of tan 200^(@)(cot10^(@)-tan10^(@)) is

Tha value of sqrt(3)tan10^(@)+sqrt(3)tan20^(@)+tan10^(@)tan20^(@)

The value of sqrt(3) tan10^(@)+sqrt(3) tan 20^(@)+1 tan 10^(@)* tan 20^(@) is _____