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 = 5, c = 8; find cot A.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the exact value of the trigonometric function. Do not use a calculator or tables.sin 
A. 
B. 
C. 
D. 
Mathematics
Factor the special products, which are the sum or difference of two perfect cubes.125k3 + m3
A. (5k + m)(25k2 + 5km + m2) B. (5k + m)(25k2 + m2) C. (5k + m)(25k2 - 5km + m2) D. (5k + m)(25k2 - 5km - m2)
Mathematics
One solution of a polynomial equation is given. Use synthetic division to find any remaining solutions.x3 - 3x2 - 25x + 75 = 0; -5
A. 3 B. 3, 5 C. -3, 5 D. ±3
Mathematics
Evaluate the expression for the given replacement values.
+ y2
x = 5, y = 9
A. 
B. 
C. 
D. 43
Mathematics