The point is on the terminal side of an angle in standard position. Determine the exact values of the three trigonometric functions sine, cosine, and tangent of the angle ?.
?
?
A. sin ? = 
cos ? = 
tan ? = 
B. sin ? =
cos ? = 
tan ? = 
C. sin ? =
cos ? = 
tan ? = 
D. sin ? =
cos ? = 
tan ? = 
E. sin ? =
cos ? = 
tan ? =
Answer: D
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, where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded which was 2,511,886 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake? (Round to the nearest tenth.)
A. 6.4 B. 5.4 C. 14.7 D. 0.6
Solve the equation.(x - 5)2 + x2 = (x + 5)2
A. {-20} B. {0, -20} C. {0, 20} D. {20}
Simplify.-?-11?
A. 11
B. - 
C. -11
D. 0
A square park has a length of 25 feet on each side. If a path is created along the diagonal of the square, what is the length of the diagonal?
A. 
ft
B. 
ft
C. 
ft
D. none of these