Answer:
If you've learnt sin(A+B) = sinAcosB + cosAsinB,
sin(4u)
= sin(2u+2u)
= sin(2u)cos(2u) + cos(2u)sin(2u)
= 2 sin(2u) cos(2u).
25 percent. in order to get only one face card you must get the ten and any other card. the probability of getting the 10 is 25 percent so that's the answe
