" 5."sin^(-1)(3)/(5)+tan^(-1)(3)/(5)=tan^(-1)(27)/(11)

Prove that : cos^(-1).(4)/(5)+ tan ^(-1).(3)/(5) = tan^(-1) .(27)/(11) (ii) Prove that : sin^(-1).(3)/(5)+ tan ^(-1).(3)/(5) = tan^(-1) .(27)/(11)

Prove that cos^(-1)((4)/(5))+tan^(-1)((3)/(5))=tan^(-1)((27)/(11))

sin^(-1)(3/5)+tan^(-1)(1/7)=

sin^(-1)(3/5)+tan^(-1)(1/7)=

sin ^(-1)((3)/(5))+tan ^(-1) (1)/(7)=

show that cos^(-1)""(4)/(5)+cot^(-1)""(5)/(3)=tan ^(-1)""(27)/(11) .

tan^(-1)""(3)/(2) +tan^(-1)""(6)/(5)=pi - tan^(-1)""(27)/(8)

sin[cos^(-1)(3/5)+tan^(-1)2]=