Cosine and Sine Function (Trigonometric function) Help?

maygoround

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I don't know if this is the right part to be posting in but..

A lighthouse beacon rotates through 360 degrees every 12 seconds, it is located 100 m off the shore of an island with a coastline of steep cliffs running north and south. As the light beam sweeps clockwise, starting from the north (direction of 0 degrees), it strikes some part of the cliff.

How long does it take the light beam to reach 30 degrees? What is the distance travelled by the beam to the cliff at that time?

I know how to find the amount of time it takes ( K value multiply by 30 degrees), I just don't know how to find the distance.
 
I don't know if this is the right part to be posting in but..

A lighthouse beacon rotates through 360 degrees every 12 seconds, it is located 100 m off the shore of an island with a coastline of steep cliffs running north and south. As the light beam sweeps clockwise, starting from the north (direction of 0 degrees), it strikes some part of the cliff.

How long does it take the light beam to reach 30 degrees? What is the distance travelled by the beam to the cliff at that time?

I know how to find the amount of time it takes ( K value multiply by 30 degrees), I just don't know how to find the distance.

This is a very poorly posed question.

I suppose you need to find the length of the cliff (shoreline) lighted by this beam. The angular travel of the beam is 30°.

Draw a sketch of the situation first.

Please share your work with us.


You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217

We can help - we only help after you have shown your work - or ask a specific question (e.g. "are these correct?")
 
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