Use the properties of the trigonometric functions to find the exact value of the expression. Do not use a calculator.tan 40° cot 40°
A. -1
B. 1
C. 0
D. 40
Answer: B
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Refer to this figure to answer the question. Assume 
and 
are parallel.
Are ?CDA and ?ADE vertical angles?
A. No B. Yes
Solve the problem.Six students keep track of their weekly gasoline bills. The gas bills from the students during a certain week are: $94, $74, $32, $74, $29, $94. Find the mode of the data if it exists
A. $74 B. no mode C. $94, $74 D. $94
Express the function in the form f(x) = a(x - h)2 + k and indicate the vertex.f(x) = x2 - 3x + 4
A. f(x) = (x - 5)2 + 4
vertex: (5, 4)
B. f(x) = (x + 3)2 + 22
vertex: (-3, 22)
C. f(x) = (x + 
)2 + 
vertex: 
D. f(x) = (x - 
)2 + 
vertex: 
Provide the proper response.Answer the following:(a) Write the equation meaning "y varies inversely as x."(b) If y varies inversely as x, does x vary inversely as y? Support your answer.(c) If y varies inversely as the square root of x, does x vary inversely as the square root of y? Support your answer.
What will be an ideal response?