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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To find you can use pythagorus' theorem. The hypotenuse is , and the other side is . Then note that .
What about theta in that formula? How would I find out what that is in order to find d?
It's asking for in terms of and . You don't need theta for this part of the question:
You can simplify this formula.
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