`cot60^(@)xxtan30^(@)=`?

Evaluate : tan 40^(@)xxtan 50^(@)

Evaluate : tan 40^(@)xxtan 50^(@)

The value of (tan15^(@)xxtan45^(@)xxtan60^(@)xxtan75^(@)) is

(cos0^(@)+sin90^(@))xx(tan30^(@)xxtan60^(@)) is:

Given that: A = cot 30^(@) and B = (cot60^(@) cot30^(@) +1)/(cot30^(@) - cot 60^(@)) , which of the relations stated below is true ?

If xsin60^(@). tan30^(@)=sec60^(@).cot45^(@) , then the value of x is

tan60^(@)cos60^(@)+cot60^(@)sin60^(@)=_____ .

Show that: (cot 30^(@) cot 60^(@) - 1)/(cot 30^(@) + cot 60^(@)) = cot 90^(@)

prove: ((sin0^@+sin60^@)(cos60^@+cot45^@))/((cot60^@+tan30^@)(cosec30^@-cosec90^@))=9/8

Find the value of tan1^(@)xxtan2^(@)xxtan3^(@)xx.............xxtan89^(@)