For the given figure,if `cos alpha=5/(13)` and `cos beta=(3)/(5)` find the length of `BD`

if cos alpha=(3)/(5) and cos beta=(4)/(5) find the value of cos((alpha-beta)/(2))

If cos(alpha+beta)=(5)/(13) and cos(alpha-beta)=(4)/(5) then find the value of tan2 beta

In the following figures AB = 4 m and ED = 3m. If sin alpha = (3)/(5) and cos beta = (12)/(13) find the length of BD

If cos alpha=(12)/(13) and sin beta=(4)/(5) , then find sin(alpha+beta) .

IF cos (alpha +beta )=(5)/(13) and cos (alpha - beta )=(4)/(5), then find the value of tan 2 beta .

If sin alpha=15/17 and cos beta=12/13 , find the values of : cos (alpha-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 cos alpha=(3)/(5) and cos beta=(5)/(13), then cos^(2)backslash(alpha-beta)/(2)=

If sin alpha=(15)/(17) and cos beta=(12)/(13) find the values of sin(alpha+beta),cos(alpha-beta) and tan(alpha+beta)

If alpha and beta be between 0 and (pi)/(2) and if cos (alpha+beta)=(12)/(13) and sin (alpha-beta)=(3)/(5), then sin 2 alpha is equal to