Answer:
15°
Explanation:
Let the height of the window be 'h'
Let the angle the second ladder make with the ground be 'Ф'
From the image uploaded, height of the window 'h' will be calculated from figure a
Using SohCahToa; we calculate the height of the window 'h' that 10-foot ladder must reach.
sine30 = opposite/hypotenuse
sine 30 = h/10ft
h = 10ft × sine30
h = 10ft × 0.5
h= 5ft; height of the window is 5 foot
using figure b and substituting the value of h as 5ft, will calculate 'Ф' for 20-foot ladder
sine Ф = 5ft/20ft
sine Ф = 1/4
sine Ф = 0.25
Ф = arc sine (0.25)
Ф = 14.4775°
Ф ≅ 15°
Answer:
Option d) B is 1.33 times faster than A
Given:
Clock time,
No. of cycles per instructions,
Solution:
Let I be the no. of instructions for the program.
CPU clock cycle, = 2.0 I
CPU clock cycle, = 1.0 I
Now,
CPU time for each can be calculated as:
CPU time, T =
Thus B is faster than A
Now,
Performance of B is 1.33 times that of A