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Mathematics 14 Online
OpenStudy (anonymous):

If the cosine of an angle is 0.93475, what is the angle expressed as degrees, minutes and seconds?

OpenStudy (baldymcgee6):

cos(x) = 0.93475 Take the cos^-1 of each side to solve for x

OpenStudy (baldymcgee6):

because the cos^-1(cos(x)) = x

OpenStudy (anonymous):

check that your answer will be 20deg 48min 43.94 sec

OpenStudy (anonymous):

20 degrees 48 minutes 43.9 se

OpenStudy (anonymous):

seconds

OpenStudy (baldymcgee6):

@mark_o. how is degrees and time related?

OpenStudy (anonymous):

it's not time, it's just the same sort of terminology. a degree can be divided into 60 parts called "minutes", and each minute can be divided into 60 seconds.

OpenStudy (anonymous):

have two more i need checked

OpenStudy (anonymous):

So it's very much like time, but it is just a way of dividing up degrees.

OpenStudy (anonymous):

its not really time here,,its the revolution , like i revolution = 360 degrees, and measurements with minutes and seconds are subdivisions of degrees having nothing to do with time. The names are due to the fact that 1/60th was chosen as the standard, so there are sixty minutes in a degree and sixty seconds in a minute, just like on a clock.

OpenStudy (anonymous):

what is the cosine of 104.73167 degrees? i got -0.25429 is this correct

OpenStudy (anonymous):

yes correct @ krissywatts

OpenStudy (anonymous):

what is the tangent of 75 degrees 16 minutes abd 31 seconds? i got 3.80508

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

yw good luck now

OpenStudy (anonymous):

thanks

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