Fill in the blank using the word product, sum, quotient, or difference.The formula sin ? - sin ? = 2 sin 
cos 
can be used to change a 
of two sines into the 
of a sine and a cosine expression.
A. sum, quotient
B. sum, product
C. difference, product
D. difference, quotient
Answer: C
Mathematics
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Perform the operations indicated. Write your answer in simplest form.9 + (-13)
A. 4 B. 22 C. -4 D. -22
Mathematics
Find an equation of the parabola described.Focus at (0, 3); directrix the line y = -3
A. x2 = -12y B. y2 = 3x C. x2 = 12y D. y2 = 12x
Mathematics
Simplify. Assume that all radicands are nonnegative.2
(
- 
)
A. 4 sin ? (1 + 39
)
B. 4 cos ? 
+ 3 sin2 ?
C. 3 cos2 ? 
+ 2 sin ?
D. 4 sin ? (1 - 3 
)
Mathematics
Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 
D. 1
Mathematics