Use reference angles to find the exact value of the expression.sin 
A. - 
B. 
C. -1
D. - 
Answer: D
Mathematics
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Solve.The area of a triangular poster is 870 square centimeters. Its altitude is 2 feet shorter than twice its base. Find the lengths of the altitude and base.
A. base = 60 cm; altitude = 14.5 cm B. base = 15 cm; altitude = 58 cm C. base = 30 cm; altitude = 58 cm D. base = 30 cm; altitude = 29 cm
Mathematics
Solve.5358 = 541 + t
A. 5899 B. 4817 C. 3541 D. 4082
Mathematics
Decide whether or not the ordered pair is a solution of the system.(1, -2)4x = 2 - y3x = -5 - 4y
A. Yes B. No
Mathematics
Find the component form of the indicated vector.Let u = 
. Find -7u.
A. 
B. 
C. 
D. 
Mathematics