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Anika [276]
3 years ago
15

EDAL!!!!!!!!!!!! What is the missing justification in the proof of the Pythagorean identity below, sin^2(x)+cos^2(x)=1, using a

right triangle? A. Transitive property of equality B. Substitution property of equality C. Reflexive property of equality D. Symmetric property equality
Mathematics
1 answer:
Novay_Z [31]3 years ago
3 0
You have to jusitfy the step that leads from sin (x) = a/c and cos(x) = b/c to sin^2 (x) + cos^2(x) = [a^2 / c^2] + [b^2 / c^2].


As you can see go from the first statement to the second by substituting the value of sin(x) by a/x and the value of cos(x) by b/c.


Then, the answer is the option b. substitution property of equality.

 
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Step-by-step explanation:

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And we know that we have 8 units of difference between A and B.

The equation of a circle centerd in the point (x0, y0) is:

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So we can draw a circle of 8 units around A, and get:

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So from this equation we can find all the possible values of B, for this we can isolate one of the variables in one side and get a function.

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So for a given value of X, you can find the value of Y. where you need to remember that (8^2 - (X-5)^2) can not be a negative number, so we must have that:

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So X can go from -3 (because (-3 - 5)^2 = 8^2)

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So X is in the range {-3, 13}

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