Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Add or subtract as indicated. Write the answer in simplest form.- 
+ 
A. 
B. - 
C. - 
D. 
Mathematics
Simplify the power of i.i-22
A. -1 B. -i C. i D. 1
Mathematics
Perform the indicated operation or operations. Write the answer in simplest form. If the problem contains mixednumbers and the answer is an improper fraction, express the answer as a mixed number.
? 
2
A. - 
B. 
C. 
D. 
Mathematics
Match the given equation with one of the graphs.y2 = -5x
A. 
B. 
C. 
D. 
Mathematics