" (8) "4(cot^(1)x+csc^(1)sqrt(5))=?

4(cot^(-1)3+csc^(-1)sqrt(5))=pi

cot^(-1)3+cosec^(-1)sqrt(5)=

" (3.) "cot^(-1)3+cosec^(-1)sqrt(5)=..........

cot^(-1)9+cosec^(-1)(sqrt(41))/4=

4(cot ^(-1)3+"cosec"^(-1) sqrt(5))=pi

Prove that : (i) tan^(-1) x + cot^(-1)( x+1) = tan^(-1) (x^(2)+x+1) (ii) cot^(-1) 3 + "cosec"^(-1) sqrt(5) = pi/4

The sum of the two angles cot^(-1) 3 and cosec^(-1) sqrt(5) is

The sum of the two angles cot^(-1) 3 and cosec^(-1) sqrt(5) is

cot^(-1)9 + cosec^(-1)(sqrt(41)/4)=