tan A: 20/15 dan tan B: 10/24, maka sin A + cos B ?

tan A = y/x
20/15 = y/x

Maka y = 20, x = 15
r = miring, phytagoras 15 dan 20 = 25

sin A = y/r = 20/25

tan B = y/x
10/24 = y/x

Maka y = 10, x = 24
r = miring, phytagoras 10 dan 24 = 26

cos B = x/r = 24/26

sin A + cos B
=20/25 + 24/26
=1120/650 = 112/65

Semoga membantuu :)