If greatest & least values of f(x)=sin−1x√x2+1−lnx in [1√3,√3] are M & m respectively, then?
If m=(cosθ−sinθ) and n=(cosθ+sinθ) then show that
√mn+√nm=2√1−tan2θ
(i) If tanA=56 and tanB=111, prove that A+B= π4 (ii) If tanA=mm−1 and tanB=m2m−1 then prove that A−B=π4