Perform the indicated operations graphically.(-3 - j) + (-1 - 2j )
A. 
a = -3 - j
b = -1 - 2j
c = (-3 - j) + (-1 - 2j )
B. 
a = -3 - j
b = -1 - 2j
c = (-3 - j) + (-1 - 2j )
C. 
a = -3 - j
b = -1 - 2j
c = (-3 - j) + (-1 - 2j )
D. 
a = -3 - j
b = -1 - 2j
c = (-3 - j) + (-1 - 2j )
Answer: A
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Use sum-to-product identities to rewrite the expression as a product.sin 
- sin 
A. 2 sin 
cos 
B. -2 sin 
sin 
C. -2 cos 
sin 
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cos 