Use the unit circle to find the six trigonometric functions of 240°.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: C
Mathematics
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Find dy/dx by implicit differentiation. If applicable, express the result in terms of x and y.5y + 6xy - 4 = 0
A. 
B. 
C. 
D. 
Mathematics
Use rules of exponents to simplify the expression. Use positive exponents to write your answer.
A. 411 B. 1 C. 27 D. 211
Mathematics
Solve the problem.The variable z varies jointly as the 2.4 power of x and the 1.7 power of y. When 
and 
Approximate the constant of variation to three significant digits.
A. 5.16 B. 8.56 C. 6.66 D. 8.06
Mathematics
Choose the equivalent expression for the given expression.cot2x
A. sec2x - 1 B. csc2x - 1 C. 1 - tan2x D. 1 + csc2x
Mathematics