Evaluate the function requested. Write your answer as a fraction in lowest terms. Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 123, adjacent B C is 27, opposite A C is 120.
Find cos B.
a.
Cosine B = StartFraction 40 Over 41 EndFraction
c.
Cosine B = StartFraction 9 Over 40 EndFraction
b.
Cosine B = StartFraction 41 Over 40 EndFraction
d.
Cosine B = StartFraction 9 Over 41 EndFraction

Please select the best answer from the choices provided

A
B
C
D

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)