Answer:
1) Is 3 for K
2) is 4 for X
3) is 56 for Y
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).
x = -3 is the answer. Writing this cause brainly requires a 20 character answer.
