A surveyor measures the distance across a straight river by the following method. Starting directly across from a tree on the opposite bank, she walks d = 76 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is θ = 28.0°. How wide is the river? m

40.4 m

Explanation:

The width of the river, the distance that she walked and the distance from her final spot to the tree makes a triangle with 1 of the side angle being 28 degrees. If we take the tan of that angle, it would equal to the ratio of the river width w to the distance she walked d = 76m

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

answer; how far out of place which the object finished relative to the starting location;