33km total / 3 hours total = 11 km/hr average
X(a+b)-y(a+b)
*factor out (a+b)*
=(a+b)(x-y)
The 4 Pack is the better value ;)
Answer:
12 combinations
Step-by-step explanation:
ANSWER
The required angle is

EXPLANATION
Let the angle whose sine is

be

Then

We take the inverse sign of both sides to obtain,

We use our scientific calculator to evaluate and obtain,