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sin^{2}x + cos^{2}x = 1
A.The Sum and Difference Identity
B.Reciprocal Identity
C.HalfAngle Identity
D.DoubleAngle Identity
E.Pythagorean Identity
E.Pythagorean Identity (this multiple choice question has been scrambled)

1 + cot^{2}x = csc^{2}x
a.Pythagorean Identity
b.DoubleAngle Identity
d.c.Reciprocal Identity
e.HalfAngle Identity
f.The Sum and Difference Identity
a.Pythagorean Identity

1 + tan^{2}x = sec^{2}x
a.Pythagorean Identity
b.DoubleAngle Identity
c.Reciprocal Identity
d.HalfAngle Identity
e.The Sum and Difference Identity
a.Pythagorean Identity

sin2x = 2sinx cosx
A.Pythagorean Identity
B.HalfAngle Identity
C.DoubleAngle Identity
D.The Sum and Difference Identity
E.Reciprocal Identity
C.DoubleAngle Identity (this multiple choice question has been scrambled)

tan2x = (2tan x)/( 1 tan^{2}x)
A.Pythagorean Identity
B.HalfAngle Identity
C.DoubleAngle Identity
D.The Sum and Difference Identity
E.Reciprocal Identity
C. DoubleAngle Identity (this multiple choice question has been scrambled)

Ordered Pair
If x and y are real numbers, then (x,y) is an ordered pair of real numbers.

Linear equation in two variables
3x7y=19 is the standard form

Pythagorean Theorem
in a right triangle the sum of the lengths of the legs in equal to the square of the length of the hypotenuse.

a^{2}+b^{2}=c^{2}
Pythagorean Theorem

Distance Formula
The distance d between the points (x,y) and (x_{2},y_{2})

Midpoint Formula
/frac{x_{1}+x_{2}}{2}, /frac{y_{1}+y_{2}}{2}

The midpoint_______________.
of the line segment with endpoints (x_{1},y_{1}) and (x_{2},y_{2})

The fixed distance is the ___________.
Radius

The given point is the ___________.
Center

The distance formula can be used to write and equation for a circurle with center______ and radius _____.

