The Falls Incline Railway at Niagara Falls has an angle of elevation of 36º. The railway extends a horizontal distance of about 138 feet. Find the height and length of the railway.

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

Difference means subtraction