Answer:
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56
Step-by-step explanation:
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I'm sorry hun, i suck at math. If i knew how i would help you. Have you tried looking it up?
It's hard to type and hard to read the "inverse tangent" function, as you've seen (above).
So, use "arctan x" instead.
Then the problem becomes: "differentiate cos (arctan x)."
You must apply first the rule for differentiating the cosine function, and next apply the rule for differentiating the arctan function:
(d/dx) cos (arctan x) = - sin (arctan x) * [1/(1+x^2)]
The formula is x1+x2 divided by 2 and y1+y2 divided by 2.I hope this is what you where looking for
