A is correct
C is correct
E is correct
Answer:
factor out 1/4 from the expression
1/4x(1-3x)
Remember that cos is just a translation of sin and vice versa.
So:
Sin(x) = Cos(90 - x)
Cos(x) = Sin(90 - x)
Therefore, to answer your question:
Cos(19) = Sin(90 - 19)
= Sin(71)
The answer to this question is B!
6 x 4=24 so the area of the donut 24 which is the answer to the question