Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. - 
B. - 
C. 
D. 
Answer: B
Mathematics
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Find the exact value under the given conditions.sin ? = 
, 
< ? < ?; cos ? = 
, 0 < ? < 
Find sin (? - ?).
A. - 
B. 
C. 
D. 
Mathematics
Solve the problem.A building has an entry with the shape of a parabolic arch 24 feet high and 4 feet wide at the base. Find an equation for the parabola if the vertex is placed at the origin of the coordinate system.
A. x2 = -0.7y B. y2 = -0.2x C. y2 = -0.7x D. x2 = -0.2y
Mathematics
Use the addition rule to solve the problem.One digit from the number 8,757,117 is written on each of seven cards. What is the probability of drawing a card that shows 8 or 1?
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality. Write the solution in interval notation and graph the solution set.3x + 4 < 25
A. (-?, 7]
B. [7, ?)
C. (-?, 7)
D. (7, ?)
Mathematics