" 18.Prove that ":tan^(-1)((1)/(2)tan2A)+tan^(-1)(cot A)+tan^(-1)(cot^(3)A)=0

prove that :tan^(-1)(((1)/(2))tan2A)+tan^(-1)(cot A)+tan^(-1)(cot^(3)A)={0when(pi)/(4)

Prove that: tan^(-1) (1/2tan2A) + tan^(-1) (cotA) + tan^(-1) (cot^3A) =0

Prove that: tan^(-1)(1/2tan2A)+tan^(-1)(cotA)+tan^(-1)(cot^3A)=0

Prove that: tan^(-1)(1/2tan2A)+tan^(-1)(cotA)+tan^(-1)(cot^3A) =0

If 0 lt A lt pi/4 , then prove that tan^(-1)(1/2tan2A)+tan^(-1)(cotA)+tan^(-1)(cot^(3)A)=

tan^(-1)(cot x)-tan^(-1)(cot2x)=

Find the value of tan^(-1)((1)/(2)tan2A)+tan^(-1)(cot A)+tan^(-1)(cot^(3)A)

Find the value of tan^(-1)((1)/(2)tan2A)+tan^(-1)(cot A)+tan^(-1)(cot^(3)A), for 0

Prove that: tan^(-1)(1/2tan2A)+tan^(-1)(cota)+tan^(-1)(cot^3A)={ when 0

Prove that: tan^(-1)(1/2tan2A)+tan^(-1)(cota)+tan^(-1)(cot^3A)={0 when pi/4 Ale pi/2 and pi , when 0 le A le pi/4 }