Answer:
Option (3)
Step-by-step explanation:
In a right triangle,
Cosine rule →
Sine rule →
In the given triangle,
By cosine rule,
Or cos(h°) = z ÷ x
Therefore, Option (3) will be the answer.
Answer:
15cm
Step-by-step explanation:
First, a square's diagonal is basically the hypotenuse of a 45-45-90 triangle. a 45-45-90 triangle has a really special relationship, where the side length is x, and the diagonal is x . So, the side length is 15.
20 square meter lawn..............................10 min
10 square meter lawn...............................5 min
30 square meter lawn in.........................5*3=15 min
Answer:
Parameter
Step-by-step explanation:
Parameter and statistic:
- Parameter is a numerical value that describes a population.
- A sample is a part of the population and always smaller than the population.
- The statistic is a numerical value that describes a sample.
Population of interest:
College students aged 18 to 22
Parameter:
66.4% reported using alcohol within the past month
Thus, the given is a parameter as it describes a population proportion.