Note that the exact value of csc 60° with a rational denominator is (2√3)/3.
The reciprocal identity states that csc(theta) = 1/sin(θ).
Since we know that sin 60 degrees = √3/2, we can substitute this value into the reciprocal identity -
csc 60° = 1/(√3/2).
To rationalize the denominator, we multiply the numerator and denominator by the conjugate of the denominator -
csc 60°= (1/(√3/2)) * (√3/√3).
csc 60° = √3/(√3 * (√3/2)).
= √3/(√3 * √3/2).
= √3/(√9/2).
= √3/(3/2).
To divide by a fraction, we multiply by its reciprocal -
csc 60° = √3 * (2/3).
csc 60° = (2√3)/3.
So it is correct to state that , the exact value of csc 60° with a rational denominator is (2√3)/3.
Learn more about rational denominator at:
#SPJ6
A.
9
B.
3
C.
–3
D.
–9
Answer:
A
Step-by-step explanation:
i just did the test
In accordance with given data correct answer is
RD= 85% * 50 = 0.85 * 50 = 42.5 ounces of red dye.
Good luck!!!
Phil used 42.5 ounces of red dye in the process of making 50 ounces of purple dye, given that the mixture was 85% red dye.
The question is asking us to determine how many ounces of red dye was used in the mixing process to produce 50 ounces of purple dye. Phil used a solution of 15% blue dye and 85% red dye. Therefore, the amount of red dye used can be computed by taking 85% of the total amount of dye made, which is 50 ounces.
To do this, we multiply the total ounces of dye (50 ounces) by the percentage of red dye (85%) used in the mixture. Mathematically, this is represented by the equation: (85/100) * 50.
Therefore, Phil used 42.5 ounces of red dye in the mixing process to make the purple dye.
Learn more about Percentage Calculation here:
#SPJ11
Answer:
Step-by-step explanation:
10 miles divided by 2.5 hours is 4 miles per hour.
10/2.5 = 4