Find the exact value of the expression.sin 255° cos 15° - cos 255° sin 15°
A. - 
B. 
C. - 
D. - 
Answer: A
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Solve the problem.Find the foci and asymptotes of the following hyperbola:25y2 - x2 = 25
A. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
B. Foci: (0, 
), (0, -
); Asymptotes: y = 
x, y = - 
x
C. Foci: (0, 26), (0, -26); Asymptotes: y = 5x, y = -5x
D. Foci: (0, 
), (0, -
); Asymptotes: y = 5x, y = -5x
Solve the problem.A building 250 feet tall casts a 50 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree)? (Assume the person's eyes are 5 feet above ground level.)
A. 78.69° B. 11.78° C. 78.22° D. 78.47°
Evaluate the expression for the given replacement values. Write the answer in simplest form.x ÷ y for x = - 
, y = 
A. - 
B. 
C. 
D. - 
Solve.A case of candy bars has 3 layers of candy bars. In each layer are 6 rows with 15 candy bars in each row. Find how many candy bars are in a case.
A. 269 candy bars B. 260 candy bars C. 270 candy bars D. 280 candy bars