Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Convert 3 feet to centimeters. Round to the nearest hundredth.
A. 300.00 cm B. 984.24 cm C. 91.44 cm D. 9.84 cm E. 914.40 cm
Mathematics
Find the sum.
A. 
B. 
C. 
D. 
Mathematics
Graph the ellipse and label the center.
+ 
= 1
A. C(0, 4)
B. C(-4, 0)
C. C(4, 0)
D. C(0, -4)
Mathematics
Solve the problem.A bakery owner sells rectangular birthday cakes that are 5 inches longer than they are wide. To increase his profit, he decides to decrease both the length and width by 3 inches. If the area of the new cake is 66 in.2 smaller than the old cake, then what are the length and width of the old cake?
A. length = 15 in. ; width = 10 in. B. length = 16 in. ; width = 8 in. C. length = 17 in. ; width = 11 in. D. length = 14 in. ; width = 9 in.
Mathematics