Question

what is the answer??give reason??even I don't understand the question?​

Answer 1

Answer: 30,45

By angle sum property of triangle find angle O1AC

Answer 2

Answer:

look at this

Step-by-step explanation:

the angle of depression is calculate from an imaginary line which is perpendicular to the height.

this means that the angle between the height and the line is 90 degree.

OK, so now that you know the whole angle, just subtract /_ AO1C (60 degrees) from 90 degrees and you get the angle of depression from the observer 1.

Now talking about the second observer, the angle B is 90 degree and the angle A is 45 degree.

by the angle sum property we know that the angle O2 is 45 degree. so now if we subtract the angle O2 (45 degree ) from 90 we get 45 degree

This tis the angle of depression for the observer O2.

SO , THE ANGLE OF DEPRESSION FOR OBSERVER 1 IS 30 DEGREE AND THE ANGLE OF DEPRESSION FOR THE OBSERVER 2 IS 45 DEGREE.

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