1 day = 24 hours
110 × 24 = 2640 mi/day
Sin θ = 2 / 7
tan θ > 0
cos θ = ?
sin θ = opposite / hypotenuse
tan θ = opposite / adjacent
cos θ = adjacent / hypotenuse
short leg = opposite = 2
hypotenuse = 7
long leg = adjacent = ?
adjacent = √(7² - 2²)
adjacent = √(49 - 4)
adjacent = √45
adjacent = √9 * 5
adjacent = 3 √5
cos θ = adjacent / hypotenuse
cos θ = 3√5 / 7
Answer:
}{360°}[/tex]
Step-by-step explanation:
We use a rule of three:
Central angle Area
360°
x
Where =pAB and x is the circular area.
What we need is x, so we solve the rule of three:
We use this formula to find the circular area of any central angle given when we have the angle and the radius.
Subtract 3x from both sides
-7-9x=8
add 7 to both sides
-9x=15
divide bothsides by -9
x=15/-9
Simplify
x=-5/3
Energy from 1 bottle last 7.5 min
1 glass cost = 2.5 $
Since it cost 5$ for 1 kg and the bottle weight 1/2 kg
6*60 =360 min ( is in 6 hours)
2.5/? =7.5/360
? = 120 $