Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos 2? = - 
, 
< 2? < ?Find sin ?.
A. 
B. - 
C. - 
D. 
Answer: D
Mathematics
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Use implicit differentiation to find dy/dx.y cos 
= 6x + 6y
A. 
B. 
C. 
D. 
Mathematics
Solve the equation. Make sure you check your final solution(s).
- 
= 1
A. x = - 
B. x = 0
C. x = - 
D. x = - 16
Mathematics
Find the focus and directrix of the parabola with the given equation.11x2 = 20y
A. Focus: 
, directrix: x = - 
B. Focus: 
, directrix: y = 
C. Focus: 
, directrix: y = - 
D. Focus: 
, directrix: y = - 
Mathematics
Evaluate the appropriate geometry formula to answer the question.A plot of land is being developed for commercial use. The land is surrounded by two sets of parallel roads, forming the parallelogram shown below. What is the area of the land?
A. 586.2 yd2 B. 5892.25 yd2 C. 9470.89 yd2 D. 11,784.5 yd2
Mathematics