Use Fundamental Identities and/or the Complementary Angle Theorem to find the exact value of the expression. Do not use a calculator.- 
A. 0
B. 1
C. -1
D. undefined
Answer: C
Mathematics
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Solve. Clear decimals first.30.8y - 215.6 = 46.2y - 323.4
A. -14 B. 7 C. -7 D. 14
Mathematics
Using a calculator, find the decimal approximation to the nearest thousandth. If the square root is not a real number, so state.
A. 1.179 B. 1.000 C. 1.194 D. 1.166
Mathematics
Find the exact value under the given conditions.sin ? = 
, 
< ? < ?; cos ? = 
, 0 < ? < 
Find sin (? - ?).
A. - 
B. 
C. 
D. 
Mathematics
Subtract the fractions. Write the answer in lowest terms.
A. 
B. 
C. 
D. 
Mathematics