Write the sum without sigma notation and evaluate it.
A. -sin 
+ sin 
- sin 
= -1
B. -sin 
- sin 
= 2
C. -sin 
+ sin 
- sin 
= 0
D. -sin 
+ sin 
- sin 
= 1
Answer: D
Mathematics
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Find sin A and cos A.
A. sin A = 
; cos A = 
B. sin A = 
; cos A = 
C. sin A = 
; cos A = 
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; cos A = 
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A. {16}
B. 
C. 
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