Your answer is 3/8 , that’s your answer
ALL LINES CAN BE REPRESENTED IN THE FORM
.
We know that:

and

Observe that:

So:

But we know that
, so:




Since:



So the line is:

N I believe but I’m not too sure
Answer: 15
Step-by-step explanation: Label the tree with 4m for the height of the tree and the base of the triangle 15m for the shadow it cast. The angle is adjacent to 15m and opposite to 4m making the equation you use tanx=4/15 which when you solve becomes tan^-1(4/15) which gives you 15.