## krissywatts 3 years ago If the cosine of an angle is 0.93475, what is the angle expressed as degrees, minutes and seconds?

1. baldymcgee6

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

2. baldymcgee6

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

3. mark_o.

4. krissywatts

20 degrees 48 minutes 43.9 se

5. krissywatts

seconds

6. baldymcgee6

@mark_o. how is degrees and time related?

7. JakeV8

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.

8. krissywatts

have two more i need checked

9. JakeV8

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

10. mark_o.

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.

11. krissywatts

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

12. mark_o.

yes correct @ krissywatts

13. krissywatts

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

14. krissywatts

thanks

15. mark_o.

yw good luck now

16. krissywatts

thanks