If `cotalpha=1/2`,`secbeta=-5/3`,where `piltalphalt(3pi)/2`and `pi/2 ltbetaltpi`.find the value of `alpha + beta` terminates

If cot alpha=(1)/(2),sec beta=-(5)/(3), where pi

If cot alpha=(1)/(2) , sec beta=(-5)/(3) where pi lt alpha lt (3pi)/2 and (pi)/(2) lt beta lt pi Find the value of tan(alpha +beta)

If alpha=sin^(-1)(2/3)" and "beta=tan^(-1)(1/2) , where 0lt alpha,betalt(pi)/(2), then find the value of alpha-beta .

If cos alpha = (-3)/5 and sin beta = 7/25 where (pi)/2 lt alpha lt pi and 0 lt beta lt (pi)/2 then find the values of tan (alpha + beta) and sin (alpha + beta) .

If cos alpha=-(3)/(5) and sin beta=(7)/(25) where (pi)/(2)

If sin(alpha+beta)=1 and sin(alpha-beta)=1/2 , where 0lt=alpha, betalt= pi/2 , then find the values of tan(alpha+2beta) and tan(2alpha+beta) .

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

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

If sinalpha=(-3)/(5) , where piltalphalt(3pi)/(2) , then cos""(alpha)/(2)=?