13 x 17n - 13 x 15
= 221n - 195
Sinα=h/L
α=arcsin(h/L)° we are told that h=18 and L=20 so
α=arcsin(9/10)°
α≈64° (to nearest whole degree)
They would be the same if the slope is 1
Step-by-step explanation:
The ratio is 459/484.
The percent is:
459/484 × 100%
= 94.83%
The percent left is:
100% − 94.83%
= 5.17%