Answer:
abt 8.77
Step-by-step explanation:
26.270833 was not sure about the first one but the seconed one was 14
Answer:
Answer in file:
Step-by-step explanation:
No, it is not a proportional relationship because the graph does not go through the origin. A proportional relationship is supposed to be a straight line, starting from the origin. It starts on the number 4.
If this is supposed to be

Then this can simply be reduced to

by the double angle formula for cosine