If the angle of declination is known, a surveyor would use_______ to find the length x.

Question

The cosine of a 50° angle is_______ this represents the value created when length x is divided by 90 feet.
If the angle of declination changed to 60°, the cosine would be 0.5; now the length of x would be_______ feet.
If the angle of declination changed to 60°, the angle of inclination would be______ degrees.

Answer 1

trigonometry, 0.866, 45, 30