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tan of an angle touching the x-axis is directly related to the gradient of the line, simply because tan is opposite divided by adjacent, but then opposite is the change in y and adjacent is the change in x.

So the above is equivalent to change in y divided by change in x, or gradient.

If tan x = k, then the gradient is k or -k depending on whether the line is upsloping or downsloping.

So the above is equivalent to change in y divided by change in x, or gradient.

If tan x = k, then the gradient is k or -k depending on whether the line is upsloping or downsloping.

Date Posted:
8 months ago

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Illustration using random numbers

Date Posted:
8 months ago