Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Find the exact value of the sum.sin 
- sin 
A. 
B. 
C. 
D. 
Mathematics
Solve using the multiplication principle.-6x = -30
A. 2 B. 24 C. -24 D. 5
Mathematics
Letting r stand for "The food is good," p stand for "I eat too much," and q stand for "I'll exercise," write the following in symbolic form.If the food is not good, I won't eat too much.
A. r ? ~p B. ~(r ? p) C. ~r ? ~p D. ~p ? ~r
Mathematics
Use the Negative Exponent Rules to simplify. Write the answer with positive exponents. All variables are nonzero.8-1
A. - 
B. 
C. 8
D. -8
Mathematics