Find the product.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate.2 cot2 270° + 2 sec2 0° - csc2 225°
A. 
B. 
C. 0
D. 4
Mathematics
Find the exact value of the sum.sin 
- sin 
A. - 
B. - 
C. - 
D. - 
Mathematics
Change the polar coordinates (r, ?) to rectangular coordinates (x, y).(-10, 225°)
A. (5?, 5?)
B. (5
, 5
)
C. (5
, 5
)
D. (-5
, -5
)
Mathematics
Check the addition. If the answer is incorrect, find the correct answer.
557
A. Incorrect; should be 647 B. Incorrect; should be 507 C. Correct D. Incorrect; should be 657
Mathematics