Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 3, b = 2; find cos A.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate the given double integral by changing it to an iterated integral.
S is the triangular region in the first quadrant bounded by the lines x = y/4, x = 1, y = 0, and y = 4
A. 
(e - 1)
B. 
(e - 1)
C. 64(e + 1)
D. 
e
Mathematics
Determine whether the statement is true or false.The greatest common factor of two relatively prime numbers is always 1.
A. True B. False
Mathematics
Solve the problem.Fred took his mother out to dinner for her birthday. The bill for the food was $63.20, the bill for drinks was $15.25. How much was Fred's 10% tip, rounded to the nearest dollar?
A. $6 B. $2 C. $96 D. $8
Mathematics
Find the inverse of the function.f(x) = - 
A. f-1(x) = -1x
B. f-1(x) = - 
C. f-1(x) = - 
D. f-1(x) = 
Mathematics