Use the half-angle formulas to evaluate the given function.cos 
A. 0.2588
B. 0.3660
C. 0.7934
D. 0.9659
Answer: A
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Test the equation for symmetry with respect to the given axis, line, or pole.r = 2 - 4 sin ?; the polar axis
A. Symmetric with respect to the polar axis B. May or may not be symmetric with respect to the polar axis
Perform the indicated conversion within American units of length.93 in. = 
ft
in.
A. 7 ft 9 in. B. 6 ft 21 in. C. 7 ft 8 in. D. 9 ft 7 in.
Solve the problem.To convert a temperature C given in degrees Celsius to an equivalent temperature F in degrees Fahrenheit, use the formula F = 
+ 32. Find the Fahrenheit temperature that is equivalent to -35°C.
A. -37°F B. -2°F C. -31°F D. -95°F
Find two positive numbers whose product is 196 and whose sum is a minimum.
a. 14, 14 b. 3, 48 c. 6, 24 d. 4,36 e. 2, 72