Solve the system.x2 + y2 = 113x2 - y2 = 15
A. {(8, 7), (7, 8), (-8, -7), (-7, -8)}
B. {(-8, -7), (-7, -8)}
C. {(8, -7), (8, 7)}
D. {(8, 7), (-8, 7), (8, -7), (-8, -7)}
Answer: D
Mathematics
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B. 
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by multiplying the numerator and denominator by 1 + cos x.
A. tan x - csc x + C
B. cot x - sec x + C
C. - cot x - 
+ C
D. - cot x - csc x + C
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÷ 
A. - 
B. 
C. 
D. - 
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