The Pythagorean theorem is the idea that the sum of the two legs which are both squared is equal to the hypotenuse's length squared.
*<em>look at the image I attached for a better explanation</em>
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By looking at the picture, we are missing the leg's length, and by using the Pythagorean theorem, we get the equation
Thus the <u>missing side length is 13.2 cm</u>
Hope that helps!
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Answer:
See the proof below.
Step-by-step explanation:
For this case we need to proof the following identity:
So we need to begin with the definition of tan, we know that and we have this:
(1)
We also have the following identities:
And if we apply those identities into equation (1) we got:
(2)
We can divide numerator and denominator from expression (2) by like this:
And if we simplity we got:
And with that we complete the proof. And that appies for all