A 16-ft-long ramp rises at an angle of 18.5 degree. How long is the base of the ramp to the nearest foot? pls include explanation <3

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅