IF THE ANGLE OF ELEVATION OF A FROM B IS 42°, WHAT IS THE ANGLE OF DEPRESSION OF B FROM A?.

138°

Step-by-step explanation:

The angle of elevation and depression are supplementary, thus

angle of depression = 180° - 42° = 138°

Angle of depression = 138 degrees

Step-by-step explanation:

Angle of elevation = 42 degrees

Angle of depression = ?

To find the angle of depression, We'll simply subtract the angle of elevation from 180 degrees because angle of elevation and angle of depression add up to 180 degrees.

So,

Angle of depression = 180-42

Angle of depression = 138 degrees

i think the correct option is the second option.