Prove that `2/3c o s e c^2 5 8^(@)-2/3cot5 8^(@)tan3 2^(@)-5/3tan1 3^(@)tan3 7^(@)tan4 5^(@)tan5 3^(@)tan7 7^(@)=-1`

Prove that (2)/(3)csc^(2)58^(@)-(2)/(3)cot58^(@)tan32^(@)-(5)/(3)tan13^(@)tan37^(@)tan45^(@)tan53^(@)tan77^(@)

Prove that : (2)/(3)cosec^2 58^@-(2)/(3) cot 58^@tan 32^@ -(5)/(3)tan 13^@tan 37^@tan 45^@tan 53^@tan 77^@=-1 .

S o l v e(sin1 0^(@))^(tanx+tan3x)=tan1 5^(@)+tan3 0^(@)+tan1 5^(@)tan3 0^(@), x in (0,pi]

tan ^(-1) (1/3)+tan ^(-1) (1/5)+tan ^(-1) (1/7)=tan ^(-1) x, then x=

Prove that : 2sin^-1 (3/5) = tan^-1 (24/7)

Value of tan^(-1)1/3+tan ^(-1)1/5+tan^(-1)1/7+tan^(-1)1/8 is

The value of (3 tan 5^@-tan^3 5^@)/(1-3tan^2 5^@) is :-

Prove that : 2 sin^(-1)( 3/5) = tan^(-1)( 24/7)

Find the values of following . (a) (tan^(2)37(1)/(7)^(@)+1)/(tan^(2)37(1)/(2)^(@)-1) (b) (3 tan^(2)5^(@)-1)/(3tan5^(@)-tan^(3)5^(@))