Answer:

Step-by-step explanation:
Because sine = opposite over hypotenuse, simply multiply both sides by the hypotenuse to get:
hypotenuse * sinθ = opposite
Do the same thing with cos to get:
hypotenuse * cosθ = adjacent
Hope it helps :) and let me know if you want me to elaborate.
Answer: six
Step-by-step explanation:
Hello!
To solve this exercise, we must use the formula below:

Knowing these values, let's replace them in the formula to obtain r:

So, the radius of this circle is 10cm.
Hope this helps!

First I found the number of adults by multiplying .60 by 700. It was 420. From there all I had to do was subtract it from 700. Revealing the number of children to be 280.