" The value of tan "81^(@)-tan63^(@)-tan27^(@)+tan9^(@)" is "

The value of tan 81^(@) - tan 63^(@) - tan 27^(@)+ tan 9^(@) is equal to

The vlaue of tan 81^(@) - tan 63^(@) - tan 27^(@)+ tan 9^(@) is equal to

The value of tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@) is

Select and write the correct answer from the given alternatives in each of the following: The value of tan81^@-tan63^@-tan27^@+tan9^@=

The value of (tan 9^(@)-tan 27^(@)-tan 63^(@)+tan 81^(@)) is-

The value of tan27^(@)+tan18^(@)+tan27^(@)tan18^(@), is -A) an rrational number (B) rational which is an integer (C) integer which is prime (D) integer which is not prime

the value of tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@) is equal to