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tan9-tan27-tan63+tan81=...

tan9-tan27-tan63+tan81=

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Find the values of tan 9^@-tan 27^@-tan 63^@ + tan 81^@

The value of tan9^@-tan2 7^@-tan6 3^@+tan8 1^@ is equal to

the value of tan9^@-tan2 7^@-tan6 3^@+tan8 1^@ is equal to

Prove that : tan 9^@- tan 27^@- tan 63^@ + tan 81^@ = 4 .

tan9^(0)-tan27^(0)-tan63^(@)+tan81^(@)

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

tan9^@xxtan27^@xxtan63^@xxtan81^@= (a)4 (b)3 (c)2 (d)1

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