Home
Class 12
MATHS
[" 31."tan^(-1)(1)/(4)+tan^(-1)(2)/(9)=(...

[" 31."tan^(-1)(1)/(4)+tan^(-1)(2)/(9)=(1)/(2)cos^(-1)(3)/(5)=sin^(-1)(4)/(5)],[" Hint: For R.H.S.use the formula "cos^(-1)x=2tan^(-1)sqrt((1-x)/(1+x))]

Promotional Banner

Similar Questions

Explore conceptually related problems

2 ( tan ^(-1)""(1)/(4) +tan ^(-1)""(2)/(9))=cos ^(-1)""(3)/(5)

Prove that: tan^(-1)((1)/(4))+tan^(-1)((2)/(9))=(1)/(2)cos^(-1)((3)/(5))

Prove that : tan^(-1).(1)/(4)+tan^(-1).(2)/(9)=(1)/(2)sin^(-1).(4)/(5)

Prove that. tan^(-1)((1)/(4)) +tan^(-1)((2)/(9)) =(1)/(2) cos^(-1) ((3)/(5)) .

Show that : "tan"^(-1)(1)/(4) +"tan"^(-1)(2)/(9) = (1)/(2) "cos"^(-1)(3)/(5) .

Prove the following: tan^(-1)(1/4)+tan^(-1)(2/9)=1/2cos^(-1)(3/5)=1/2sin^(-1)(4/5)

Prove the following: tan^(-1)(1/4)+tan^(-1)(2/9)=1/2cos^(-1)(3/5)=1/2sin^(-1)(4/5)

If tan^(-1)(1)/(4)+tan^(-1)(2)/(9)=(1)/(2)cos^(-1)x then x is equal to

tan^(-1)(sqrt((a-x)/(a+x)))=(1)/(2)cos^(-1)((x)/(a))

Prove that: tan^-1(1/4)+tan^-1(2/9)=1/2 cos^-1(3/5) .