The general equation for a circle with center (a,b) and squared radius k is
Here we have
and the constant is fixed by substituting in the point we know (x,y)=(3,-5)
Answer:
What’s the sum of c and twice d?
2 answers:
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ANSWER
C. 58°
EXPLANATION
The sum of the interior angles of a triangle is 180°.
We sum all the three angles to obtain,
.
We group like terms to get,
.
Simplify,
.
Combine like terms to get,
.
Simplify,
.
Divide both sides by 32 to get,
.
We substitute the value of x into the expression for
.
This implies that,
.
.
.
The correct answer is C