In triangle ABC, if b=3, cos A=3/5 and cosB=5/13 then find the value of (5c)/2

In triangle ABC , if a=3, b=4, and c=5, then find the value of cosA.

In triangle ABC , if a=3, b=4, and c=5, then find the value of cosA.

In a triangle ABC, if a=2,b=4,c=5 then cosB=

In triangle ABC if a=3 cm b=4cm and c=5 am then value of cosB is

(i) If a:b:c= 2:3:4 and s=27 inches, find the area of the triangle ABC. (ii) If in a triangle ABC, a=6, b=3 and cos(A-B) =4/5 then find its area.

In a triangle ABC, a =3,c = 5 and b =4, then the value of radius of inscribe is "_____"

In a Delta ABC, if b=20, c=21and sin A =3/5, then the value of a is

In a Delta ABC, if b=20, c=21and sin A =3/5, then the value of a is

If cosA=4/5 and cosB=12/13 , then find the values of cos(A+B) and sin(A-B) , where A , B ((3pi)/(2) to 2pi ) .