Evaluate cos(37°15'). 0.7944 0.7960 0.7971
2 answers:
cos(37°15') = cos(37.25°) ≈ 0.7960
15' means 15/60 of a degree, or 0.25 degrees.
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Note: the calculator mode is set to <em>Degrees</em>.
Answer:
cos(37°15')=0.7960
Step-by-step explanation:
Evaluate cos(37°15').
First we convert 15' into degree
60' = 1 degree, to convert 15' to degree we divide by 60
So 15' = degree
cos(37°15')=cos(37° +0.25°)= cos(37.25°)
Now we use calculator to find the value of cos(37.25°)
Put the calculator in degree mode
cos(37.25°)=0.7960
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Answer:
12 pens
Step-by-step explanation:
Let the variable that can be used to determine the number of pens that Kamila bought be represented by n.
Price of a notebook = $1.59
Price a pen = $0.29
Total amount spent = $5.07
But,
1.59 + 0.29 n = 5.07
So that,
0.29 n = 5.07 - 1.59
0.29 n = 3.48
n =
= 12
Therefore, Kamila bought 12 pens.