http://i41.tinypic.com/rii6pt.jpg

I need help with part a. I don't understand how to write the formula. Please explain and show to me step by step on how to do this problem. Thanks.

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- Apr 6th 2010, 10:55 PMkrzyriceWriting a formula from a circle and triangle
http://i41.tinypic.com/rii6pt.jpg

I need help with part a. I don't understand how to write the formula. Please explain and show to me step by step on how to do this problem. Thanks. - Apr 6th 2010, 11:11 PMStroodle
To find you can use pythagorus' theorem. The hypotenuse is , and the other side is . Then note that .

- Apr 6th 2010, 11:17 PMkrzyrice
What about theta in that formula? How would I find out what that is in order to find d?

- Apr 6th 2010, 11:25 PMStroodle
It's asking for in terms of and . You don't need theta for this part of the question:

You can simplify this formula.