Verify the identity.sin 
= cos x
What will be an ideal response?
sin 
= sin x cos 
+ sin 
cos x = (sin x)(0) + (1)(cos x) = cos x.
Mathematics
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Divide. If the division is not possible, write "undefined."
A. 1 B. 0 C. 3 D. Undefined
Mathematics
Convert the rectangular coordinates of the point to polar coordinates (r, ?) with r > 0 and 0 ? ? < 2?.(2
, 2)
A. 
B. 
C. 
D. 
Mathematics
Write the number as a product of a real number and i. Simplify the radical expression.
A. -4
B. -4i
C. 4i
D. 4
Mathematics
Find all the rational zeros of the function: x 3 – 18x 2 + 108x – 216.
a. –6 b. 0, 6 c. 6 d. ±6
Mathematics