Find the radian measure of a central angle ? in a circle of radius r, assuming that ? intercepts an arc of length s. Round your answer to three decimal places when necessary.r = 19 cm, s = 8 cm
A. 2.375
B. 1.323
C. 0.421
D. 152
Answer: C
Mathematics
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Evaluate the integral.
A. - 
ln
+ C
B. 
ln
+ C
C. - 
ln
+ C
D. - 
ln
+ C
Mathematics
Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Mathematics
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.10x2 - 4xy + 6y2 - 8x + 8y = 0
A. x = 
(x' - y') and y = 
(x' + y')
B. x = 
x' - 
y' and y = 
x' + 
y'
C. x = 
x' - 
y' and y = 
x' + 
y'
D. x = -y' and y = x'
Mathematics
Convert the rectangular equation to a polar equation that expresses r in terms of ?.y = 2
A. r = 
B. r = 2
C. sin ? = 2
D. r = 
Mathematics