Question

tan`-1[x-1/x-2]+tan`-1[x+1/x+2]=pi/4 then x=

Trigonometry equations and their general 

• With assumed mean method
  

question .no.11

I want to share with you that this is not a website of maths but it is an encyclopedia of maths. when ever I Face any problem in maths I visited teachoo.com oftenly. I got so much help from this website for building my blog and getting approval from adsense. Thanks for making maths so easy

^{WHAT-IS-SET-TYPES-OF-SETS-UNION-INTERSECTION--VENN-DIAGRAMS}

tan^-1[2cos(2sin^-1 1/2)]

FIND THE RADIUS OF THE CIRCLE WHOSE AREA IS EQUAL TO THE SUM OF THE AREAS OF TWO CIRCLES OF RADII 12 cm AND 5cm