Answer:
62.83
because you take 20, divide it by 2 to get the radius then you have the equation 2π(10)
(cos(x) + cos(y))^2 + (sin(x) - sin(y))^2 Remove the brackets
cos^2(x) + cos^2(y) + 2cos(x)*cos(y) + sin^2(x) - 2(sin(x)*sin(y) + sin^2(y) Combine these two in bold to make 1 because sin^2(x) + cos^2(x) = 1
1 + cos^2(y) + 2cos(x)*cos(y) - 2*sin(x)*cos(y) + sin^2(y)
These two in bold also make 1
2 + 2cos(x)*cos(y) - 2*sin(X)*sin(y) Bring out a common factor of 2
2 +2(cos(x)*cos(y) - sin(x)*sin(y) )
but cos(x+y ) = cos(x)*cos(y) - sin(x)*sin(y)
2 + 2* cos(x + y) is your final answer.
Answer:
The boy's feet are closer to the surface of the pool because negative 4 over 5 < negative 2 over 5.
Answer:
Prob = 0.514
A. independent
Step-by-step explanation:
The probability that the club chooses a girl and then a boy for the representative spots
Total = 15
Boys = 6
Girls = 9
Prob of 2 person, a girl and a boy
=( 9C1*6C1)/(15C2)
= (9*6)/(105)
= 54/105
= 0.514
