Calculate the unit vector u = (cos ?)i + (sin ?)j for the given direction angle.? = ?
A. j
B. -i
C. -j
D. i
Answer: B
Mathematics
You might also like to view...
Express the sum in sigma notation.- 
+ 
- 
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Write as logarithmic equations.8x = 207
A. log8207 = x B. log2078 = x C. log8x = 207 D. log207x = 8
Mathematics
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.x = 7
A. x-intercept: (0, 0), m: 7
B. x-intercept: (7, 0), m: 
C. x-intercept: (7, 0), m: undefined
D. x-intercept: (0, 7), m: 0
Mathematics
Simplify the fraction to lowest terms.
A. 
B. 
C. 
D. 2
Mathematics