Question 74475
Do they still teach SOHCAHTOA in school?


It is an acronym for remembering the trigonometric relationships in a right triangle.


{{{sine=opposite/hypotenuse}}}


{{{cosine=adjacent/hypotenuse}}}


{{{tangent=opposite/adjacent}}}


In your problem, you know the length of the side opposite the angle (3.6m); and the length of the side adjacent to the angle (5.6m).


Using the tangent function:  {{{tan(x)=3.6/5.6}}} or {{{tan(x)=9/14}}}


To find the angle; you use the inverse or arctangent function, sometimes written as tan with a (-1) exponent


{{{arctan(9/14)=32.74}}} or 32.74 degrees