Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominator where necessary.sin ? = 
Find cos ?.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Convert to rectangular coordinates.
A. 
B. 
C. 
D. 
Mathematics
Write the augmented matrix for the system. Do not solve the system. 8x + 5y + 6z = 40 9x + 4y + 3z = 39 4x - 2y + 6z = -10
A. 
B. 
C. 
D. 
Mathematics
Answer the question.For f(x) = x2 - 16 and g(x) = 2x + 3, what is the domain of 
A. All real numbers
B. 
C. 
D. 
Mathematics
Provide an appropriate response.In solving the inequality 4x ? -20, would you have to reverse the inequality symbol? Explain why.
What will be an ideal response?
Mathematics