Çözüldü A Frivolous SAT Problem of Trigonometry Unworthy of Disturbing Calculator

At a distance of 50 feet from a flagpole, the angle from the ground to the top of the flagpole is 42°. Assuming the flagpole is perpendicular to the ground, what is its height?

A) 75 ft
B) 56 ft
C) 37 ft
D) 33 ft
E) 45 ft

To be done mentally in seconds;
tan(42°) ≈< tan(45°) = 1 ⇒ tan(42°) ≈ 0.9
height = 50·0,9 ≈ 45 ft.

https://assets.collegedunia.com/public/college_data/images/entrance/entrance_brochure/1671097522McGraw-Hill's SAT Subject Test_ Math Level 2, 2 E ( PDFDrive ).pdf
[ Page 17 (34 in the pdf file), Question 14, solution on page 28 (45 in the pdf file) ]