Complementary angels are two angles that equal 90 when added so S degrees + Z degree = 90 degrees or 50 degree + 40 degree = 90 so forth 4B in comments
Answer:
Step-by-step explanation:
Calculate the value of trigonometry function.
and 
Split the angle between 0 to 90° using trigonometry formula.
Therefore, cos(480°) = -0.5
Therefore, sin(480°) = 0.866
Answer:
the events of using Brand Z computers and quitting your job are independent.
Step-by-step explanation:
Let A be the event that the population used Brand Z computers and let B be the event that the population quit their jobs.
We are told that 50% of the population used Brand Z computers last year. Thus, the probability of event A is;
P(A) = 50% = 0.5
Also, we are told that 4% of the population quit their jobs last year. Thus the probability of event B is;
P(B) = 4% = 0.04
Since 2% of the population used Brand Z computers and then quit their jobs. Then the probability of the population used Brand Z computers and then quit their jobs is;
P(A ∩ B) = 2% = 0.02
From the law of independent events, if A and B are to be independent events, then;
P(A ∩ B) = P(A) × P(B)
Thus;
P(A ∩ B) = 0.5 × 0.04 = 0.02
This is same value as what was given in the question, thus the events of using Brand Z computers and quitting your job are independent.
Answer:
10) 2/3 > 0.6
11) 7% < 7/10
12) 6.5 = 650%
13) 38%, 0.4, 5/8
14) 1/2, 0.55, 57%
Step-by-step explanation:
I changed everything to decimal form to make it easy
10) 2/3 = 0.66
11) 7/10 = 0.7 7% = 0.07
12) 650% = 6.5
13) 5/8 = 0.625 38% = 0.38
14) 1/2 = 0.5 57% = 0.57
