Rewrite the expression as a single trigonometric function using a double-angle identity.sin 8? cos 8?
A. cos 8?
B. cos 4?
C. 
sin 16?
D. 2 sin 4?
Answer: C
Mathematics
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Test the equation for symmetry with respect to the given axis, line, or pole.r = 2 cos ?;
the polar axis
A. has symmetry with respect to polar axis B. may or may not have symmetry with respect to polar axis
Mathematics
Subtract. Write the answer in lowest terms.
A. 10
B. 4
C. 3
D. 4
Mathematics
Solve.
= 
(Write the answer as a mixed number.)
A. 
B. 4
C. 2
D. 
Mathematics
Use a real number to represent the situation.Joey grew 3
inches in the span of two years.
A. +3
B. -3
Mathematics