Solve the trigonometric equation in the interval [0, 2?) by first squaring both sides.sin x + 1 = 
cos x
A. 
B. 
C. 
D. 
Answer: B
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Solve for x using an equivalent exponential expression.The face-off areas in ice hockey have a diameter of 29.4 ft. Find the area of a face-off circle. Use 3.1.4 for ?. Round to the nearest tenth, if necessary.
A. 678.5 sq ft B. 92.3 sq ft C. 339.3 sq ft D. 2,714.1 sq ft
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.x2 + xy + y2 - 3y - 6 = 0
A. ? = 45°
y'2 = -18x'
parabola
vertex at (0, 0)
focus at (- 
, 0)
B. ? = 45°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±
, 0)
C. ? = 45°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±2)
D. ? = 45°
+ 
= 1
ellipse
center at (
, 
)
major axis is y'-axis
vertices at (
, - 
) and (
, 
)
Solve the equation.
= 
A. 
B. 
C. 
D. {7}
Solve.The Santos family saves 0.209 of their income. Express this as a percent.
A. 20.9% B. 0.0209% C. 2.09% D. 0.00209%