Given:
An angle θ on the unit circle has a sine of .
To find:
The value of cosθ.
Solution:
We have,
Since sinθ is positive, therefore, θ lies in first or second quadrant.
We know that,
Taking square root on both sides.
Therefore, the value of cosθ is either or .
Answer:
8/2, 12/3, 20/4
Step-by-step explanation:
150 ÷ 20 = 7.5 minutes per 1 mile
7.5 x 6 = 45 minutes
7.5 + 7.5 = 15 minutes or 2 miles in 15
60 ÷ 7.5 = 8 mph
mpm = 7.5
90 ÷ 5 = $18 per hour
18 x 8 = $144
18 x 3 = 54 (close to $60)
Step-by-step explanation:
hope this helps
Answer:
18 gallons
Step-by-step explanation:
2 cups of sugar times 9 gallons of lemonade is 18