Answer:
yeah and?
Step-by-step explanation:
Since we are looking for the time it takes for the stone to hit the ground, then it means that we set the height y to 0 ft.
y = -16t² + 486
0 = -16t² + 486
16t² = 486
t² = 30.375
t = 5.51 seconds
The answer you are looking for is 2& 3/10
By sine rule,
sin40/45= sin<B/60
Angle B= 59.0
Remaining angles are 59.0 and 81.0