Answer:
d
Step-by-step explanation:
the answer is 12% decrease in area
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).
7+8 is the answer
But it can also be 11
Answer: I'm not entirely sure, but maybe 1/x^2?