Graph the pair of parametric equations in the rectangular coordinate system.x = 7 sin t, y = 7 cos t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find all specified roots.Seventh roots of i.
A. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
B. cis 
, cis 
, cis 
, cis 
, cis 
, i, cis 
C. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
D. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
, i
Mathematics
Perform the indicated conversion within American units of length.87 ft to yards
A. 9
yd
B. 3132 yd
C. 29 yd
D. 261 yd
Mathematics
Use the given information to find the exact value of the trigonometric expression.sin ? = 
; 0 < ? < 
Find cos(2?).
A. 
B. - 
C. 
D. - 
Mathematics
Find the vertices of the hyperbola.
- 
= 1
A. (2, 3) and (2, -5) B. (-8, 1) and (4, 1) C. (-2, 5) and (-2, -3) D. (-4, -1) and (8, -1)
Mathematics