Sophie, the cat, is sitting at the top of a tree that is 15 ft tall watching a dog that is 32 ft away from the base of the tree. what is the angle of depression? round to the nearest hundredth.

See the attached figure to better understand the problem

in the triangle ABC
we know that
∅=angle of depression
tan ∅=15/32
∅=arc tan (15/32)-------> ∅=25.11°

the answer is
The angle of depression is 25.11°

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step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

1 the 1st term, 3 the 2nd term, 6 the 3rd term,etc.

note the following:

from the 1st term (1) to the 2nd term (3), we go up by 2,from the 2nd term (3) to the 3rd term (6), we go up by 3from the 3rd term (6) to the 4th term (10), we go up by 4, andfrom the 4th term (10) to the 5th term (15), we go up by 5.

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

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