Answer:
see below
Step-by-step explanation:
<em><u>sin(a+b) = sin(a)cos(b) + cos(a)sin(b)</u></em>
sin(π+q) = sin(π)cos(q) + cos(π)sin(q)
sin(π) = 0
cos(π) = -1
therefore
sin(π+q) = 0*cos(q) -sin(q) = -sin(q)
10 different groups can ski.
This is a combination of 5 items taken 3 at a time:
Answer:
15:27
Step-by-step explanation:
27 kids in the class and 15 boys