Write the equation in terms of a rotated x'y'-system using ?, the angle of rotation. Write the equation involving x' and y' in standard form.7x2 + 6
xy + y2 - 43 = 0; ? = 30°
A. 
- 
= 1
B. 
- 
= -1
C. 
- 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Graph the polar equation.r = 5 sin 2?
A. 
B. 
C. 
D. 
Mathematics
In the event of an emergency stop, the speed S, in miles per hour, of a car when brakes are applied can be calculated from the length L, in feet, of skid marks. The relationship is 
. Suppose skid marks are 67.40 feet long. Use functional notation to express the speed of the car, and then calculate that value.
?
A. 
miles per hour
B. 
miles per hour
C. 
miles per hour
D. 
miles per hour
Mathematics
Solve the equation for exact solutions over the interval [0, 2?).tan x + sec x = 1
A. ?
B. 
C. {0}
D. 
Mathematics
Solve the equation.
 FIGURE 1.png)
Mathematics