The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).y2 = 16x

A. sin2 ? = 16r cos ?
B. r sin2 ? = 16 cos ?
C. sin2 ? = 16r2 cos ?
D. r2 sin2 ? = 16 cos ?

Answer: B

Mathematics

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A. cos x = - , tan x = - 
B. cos x = , tan x = - 
C. cos x = -2, tan x = 
D. cos x = , tan x = 

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A. 16 B. 252 C. 256 D. 512

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A. f-1(x) = 
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D. f-1(x) = 

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