(3, 60°) 1 L (4, 210°)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.CR: Chapter Review
Problem 16E: Find the intensity of light at a depth of 12 meter if I0=14 and k=0.7. Round to two decimals.
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Question
calculate the Y coordinate (to at least 2 significant digits).
Expert Solution
Step 1
Given-
To find- The value of the Y-co-ordinate.
Concept used- As the above co-ordinate in polar co-ordinate , so we have to change in the rectangular co-ordiante which is as follows,
Step 2
Explanation- From the given figure the polar co-ordinates are .
Now, taking first polar co-ordinate and using the identity as , we get,
And,
Substituting the value of y in equation (1), we get,
Now, for the y- coordiante, we can write as,
As y-coordinate is postive, so,
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