Use the product-to-sum identities to rewrite the expression as the sum or difference of two functions.cos 49° cos 12°
A. 
cos 37° - 
cos 61°
B. 
cos 37° + 
cos 61°
C. 
sin 61° - 
sin 37°
D. 
sin 37° + 
sin 61°
Answer: B
Mathematics
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A. - 5 B. 7 C. 10 D. -7
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Perform the operation and write the result in the standard form.(9 + 9i)(3 - 5i)
A. 72 + 18i B. -45i2 - 18i + 27 C. 72 - 18i D. -18 + 72i
Mathematics
Find the difference. 0 - (-3)
A. 3 B. 0 C. 6 D. -3
Mathematics
Using synthetic division, determine whether the numbers are zeros of the polynomial.5, - 
; f(x) = x3 - 3x2 - 
x + 
A. Yes; no B. Yes; yes C. No; yes D. No; no
Mathematics