Use the given substitution to express the given radical expression as a trigonometric function without radicals. Assume that 0 < ? < ?/2.Let x = 3 sin ? in 
.
A. 15 sin ? tan ?
B. 15 cos ? tan ?
C. 15 sin ? cot ?
D. 3 sin2 ?
Answer: A
Mathematics
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Find the potential function f for the field F.F = -
i - 
j - 
k
A. f(x, y, z) = 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = 
+ C
D. f(x, y, z) = - 
+ C
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Insert <, >, or = to form a true statement.0.758 
0.75800
A. < B. > C. =
Mathematics
Find the zero of f(x).f(x) = 9x
A. 0 B. -9 C. does not exist D. 9
Mathematics
Evaluate.80 + (-12)0
A. 0 B. 2 C. -4 D. 1
Mathematics