Perform the indicated operations and simplify.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
You might also like to view...
Find the exact value of the indicated trigonometric function of the angle ? in the figure. Rationalize the denominator where necessary.Find tan ?.
A. 
B. 
C. 
D. 
Mathematics
Find cos(A - B).cos A = - 
and cos B = - 
, with A and B in quadrant III.
A. 
B. 
C. 
D. 
Mathematics
Use a double-angle identity to find the exact value of the expression.2 cos2 
- 1
A. 
B. - 
C. - 
D. 
Mathematics
Find a ? b.a = 4i + 6j, b = 2i + 5j
A. 38
B. 
C. 22
D. 
Mathematics