B) 0.28
arcsin(.28)=x
x=16.3
cos(90-16.3) = 0.28
-2 1/3 - (- 10 1/6) =
- 7/3 + 61/6 =
-14/6 + 61/6 =
47/6....or 7 5/6
The answer is a.............
The number of degrees does it move in 2 1/5 hours is -66°.
<h3>How to calculate the number of degrees?</h3>
From the information given, it was illustrated that the hour hand of a clock moves −30° every hour.
Therefore, to calculate the degree for a number of hours, we simply have to multiply.
In this case, to get the degree for 2 1/5 hours will be:
= Degree every hour × Number of hours
= -30° × 2 1/5
= -30° × 2.2
= -66°
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