Find the direction angles of the vector. Round to the nearest degree, if necessary.v = i - j - 2k
A. ? = 80°, ? = 100°, ? = 109°
B. ? = 66°, ? = 114°, ? = 145°
C. ? = 69°, ? = 111°, ? = 135°
D. ? = 63°, ? = 117°, ? = 154°
Answer: B
Mathematics
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Use the graph to find the standard equation of the circle.
A. (x + 1)2 + y2 = 25 B. x2 + (y + 1)2 = 25 C. (x - 1)2 + y2 = 25 D. (x + 1)2 + y2 = 5
Mathematics
Solve.Find an equivalent expression for sin3 x in terms of function values of x, 2x, or 3x, raised only to the first power.
A. 
sin x - 
sin 3x
B. 
sin x + 
sin 2x - 
sin 3x
C. 
sin x
D. 
sin x + 
sin 2x
Mathematics
Determine whether the given equation is an identity.5(2f - 31) = 10f - 155
A. Yes B. No
Mathematics
Use the distributive property to remove parentheses.9(4n + 4)
A. 72n B. 36n + 36 C. 36n + 4 D. 13n + 13
Mathematics