" 20.If "a+beta=(pi)/(2)" and "sin a=(1)/(2)," find the value of "beta

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

In sin alpha+ sin beta=(1)/(2) and cos alpha+ cos beta =(5)/(4) , find the value of tan alpha+tan beta .

if cos alpha=(11)/(61) and sin beta=(4)/(5), find the values of sin^(2)((alpha-beta)/(2)) and cos^(2)((alpha+beta)/(2))

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

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

If tan ( alpha-beta) = (sin 2 beta)/(5-cos 2 beta),"find the value of " tan alpha : tan beta.

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

If cos alpha+cos beta+cos gamma=0, where 0

If sec(alpha-beta)=sqrt(2) and sin(alpha+beta)=(1)/(2) , then find the least positive values of alpha and beta .

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)