The sun casts a 70 foot shadow on a 30 foot tree. Find the angle of elevation to the nearest degree.

23°

Step-by-step explanation:

We apply Pythagorean theorem to determine the missing length, Hypotenuse:

This hypotenuse corresponds to the right triangle and the tree's height, corresponds to the angle of elevation:

-We apply the law of Sines;

Hence, the angle of elevation is 23°

what do you mean by fog

step-by-step explanation:

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.