Answer:
-4.03846153846
Step-by-step explanation:
done
If this is supposed to be

Then this can simply be reduced to

by the double angle formula for cosine
Answer:
nice
Step-by-step explanation:
Answer:
2x+5
Step-by-step explanation:
Hope I helped :)
Answer:
y = 4
Step-by-step explanation:
Make equal ratios. y 10 4
=
x 22.5 9
If you divide 10 and 22.5, you get 0.44 repeating. If you divide 4 and 9, you will also get 0.44 repeating.