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Math Help - Trig Help ( verify answers)

  1. #1
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    Trig Help ( verify answers)

    Convert the angle given in degrees to radian measure in terms of .380

    i got 6.63 rad

    to 4 sig.figs
    1.018


    Solve the equation for all nonnegative values of less than . Do by calculator, if needed, and give the answers to three significant digits in the order of increasing.
    (not sure what to do)


    A satellite is in a circular orbit 225 km above the equator of the earth. How many kilometres must it travel for its longitude to change by 86.3?
    Assume the radius of the earth equals 6400 kilometres.(round to the nearest whole number)
    i got 9639.80 =9600
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  2. #2
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    Quote Originally Posted by rock candy View Post
    Convert the angle given in degrees to radian measure in terms of .380

    i got 6.63 rad
    Unfortunately, I cannot see any of your attachments.
    "6.63 rad" is the NUMERICAL value but the problem asked you give it in terms of \pi: Since there are 360 degrees or 2\pi radians so the conversion factor is \frac{2\pi}{360}= \frac{\pi}{180} radians per degree. \frac{\pi}{180}(380)= \frac{380}{180}\pi. Just do the fraction part.

    Unfortunately, I cannot see the attachments.

    to 4 sig.figs
    1.018


    Solve the equation for all nonnegative values of less than . Do by calculator, if needed, and give the answers to three significant digits in the order of increasing.
    (not sure what to do)


    A satellite is in a circular orbit 225 km above the equator of the earth. How many kilometres must it travel for its longitude to change by 86.3?
    Assume the radius of the earth equals 6400 kilometres.(round to the nearest whole number)
    i got 9639.80 =9600
    Follow Math Help Forum on Facebook and Google+

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