A person is 20 years old and has a maximum heart rate of 200. what is the low end of his target heart rate zone?
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The value of x in the triangle is (d) 7
<h3>How to solve for x?</h3>The complete question is in the attached image.
From the attached image of the triangle, we can see that the triangle is a right triangle, and x can be solved using the following sine function
Evaluate sin(45)
Solve for x
Divide
x = 7
Hence, the value of x in the triangle is (d) 7
Read more about special triangles at:
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