If `sinA=3/5 and pi/2ltAltpi ,` find `cosA`

If sinA=3/5 , find cosA and tanA .

If sinA=-5/13 , pi < A < (3pi)/2 and cosB=3/5 , (3pi)/2 < B < 2pi find cos(A-B)

If sinA=4/5 and cosB=5/(13) ,where 0ltAltpi/2 ; 0ltBltpi/2 , find the value of the following : (iii).Sin(A-B)

If sinA=4/5 and cosB=5/(13) ,where 0ltAltpi/2 ; 0ltBltpi/2 , find the value of the following : Cos(A-B)

If sinA=-5/13 , pi < A < (3pi)/2 and cosB=3/5 , (3pi)/2 < B < 2pi find sin(A+B)

If sinA=-5/13 , pi < A < (3pi)/2 and cosB=3/5 , (3pi)/2 < B < 2pi find tan(A+B)

If cosA=3/5 , then find the value of (sinA-cosA)/(2tanA)