Use the Half-angle Formulas to find the exact value of the trigonometric function. sin 
A. 
B. 
C. - 
D. - 
Answer: B
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Determine whether the vectors v and w are parallel.v = 4i + 2j, w = 8i + 4j
A. Parallel B. Not parallel
The number line in the following graphic represents fictional net exports in billions of dollars for five countries. Net exports are obtained by subtracting total imports from total exports; a negative net export means the country imported more goods than it exported.
What is the difference between the net exports from Spain and Denmark ?
A. 40 billion dollars B. 50 billion dollars C. 60 billion dollars D. -10 billion dollars
Match the graph with the correct equation.
A. y = cos x cos (-3) - sin x sin (-3) B. y = sin x cos (-3) + cos x sin (-3) C. y = sin x cos (-3) - cos x sin (-3) D. y = cos x cos (-3) + sin x sin (-3)
Evaluate.log10 
A. 3
B. 30
C. -3
D. 