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3 years ago

14

Chris is look up at the top of a tree. He is standing 20 feet from the tree, and his line of sight is 35 degrees from horizontal

. His eyes are 5 feet above the ground. To the nearest foot how tall is the tree?

1 answer:

zheka24 [161]3 years ago

8 0

19ft you could have looked it up but i'm was happy takin my time and working it out :o

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Write the inverse of f(x)=x2+4

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F(x) = x² + 4
y = x² + 4

First, I reverse the equation to be
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Second, we need only x to remain on the left side and we need to move the others to the right side
x² + 4 = y
x² = y - 4
x = √(y - 4)

Last, change into invers function
f⁻¹(x) = √(x - 4)

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