[5:" If "cos(A+B)=],[4/5" and "sin(A-],[B)=5/13," find "],[" the value of tan "],[2A.]

If a=3, b=4, c=5, find the value of tan( B/2) .

If 0 lt A lt B lt (pi)/(4) and sin (A+B)=(24)/(25) and cos (A-B)= (4)/(5) , then find the value of tan 2A .

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

If tan A = (sin B)/(1 - cos B) ,then find the value of tan 2A .

If sin A=(5)/(13), then find the value of sec A cos ecA+tan A

If sinA=4/5 and cosB=5/13, find the value of the following : "sin"(A+B)

If sin ( alpha + beta ) =(4)/(5) and sin (alpha - beta ) =(5)/(13), find the value of tan 2 alpha

If sin(alpha+beta)=(4)/(5), sin(alpha-beta)=(5)/(13) , find the value of tan 2alpha :

If cos(A-B)=(5)/(13) and sin(A+B)=(4)/(5) , then find sin2B.