If `2|sin2alpha|=|tanbeta+cotbeta|,alpha,beta in (pi/2,pi),` then the value of `alpha+beta` is (a)`(3pi)/4` (b) `pi` (c) `(3pi)/2` (d) `(5pi)/4`

If 2 sin 2alpha=tan beta,alpha,beta, in((pi)/(2),pi) , then the value of alpha+beta is

If alpha+beta=(pi)/(4) then value of (1=tanalpha).(1+tanbeta) is

if 2sec2alpha=tan beta+cot beta then one of the value of alpha+beta is (A) pi (B) npi- pi/4, n in ZZ (C) pi/4 (D) pi/2

Ifsin^(4)alpha+cos^(4)beta+2=4sin alpha cos beta,0<=alpha,beta<=(pi)/(2) then find the value of (sin alpha+cos beta)

If alpha+beta=(pi)/(2) and sin alpha=(1)/(3), then the value of sin beta

If tan alpha=(5)/(2),tan beta=-(7)/(9) where alpha in[(pi)/(2),pi], then alpha+beta lies in the interval.[(3 pi)/(2),(7 pi)/(3)] (b) [(13 pi)/(6),(5 pi)/(2)][(13 pi)/(6),(7 pi)/(3)] (d) [(pi)/(6),(pi)/(3)]

Le alpha and beta be such that pi

If 0