Use the given values to evaluate (if possible) three trigonometric functions sin x, cos x, cot x.
?
?
A. ?
?
B. ?
?
C. ?
?
D. ?
?
E. ?
?
Answer: D
Mathematics
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Use the vertical line test to determine whether the graph is a function.
A. Function B. Not a function
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Solve the initial value problem.Differential Equation: 
= (9t2 - 9)i - j + 
kInitial Condition: r(0) = -4i + 7j + 6k
A. r(t) = (3t3 - 9t - 4)i + (7 - t)j + (
- 4)k
B. r(t) = (3t3 + 9t + 4)i + (7 + t)j + (
+ 4)k
C. r(t) = (3t3 - 9t - 4)i + (7 - t)j + (2
+ 4)k
D. r(t) = (9t3 - 9t - 4)i + (7 - t)j + (
+ 4)k
Mathematics
Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Mathematics
A point lying on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(12, 16) Find sin ?.
A. 
B. 
C. 
D. 
Mathematics