Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 15
three inches^ they would be three times as long as they arewhen the radius is one inch, and so on for any radius. A Table of Natural Tangents is a table where the tangent of every degree and min-ute up to 90 degrees has been calculated for a radius = 1. If we wish to know the tan-gent to a radius… … Fig. 2. We are now ready -to lay off our angle. Suppose we have given the line AB, Fig. 2,and wish to lay down another line AC which shall make an angle of 31 degrees and 17minutes with AB. Draw BC perpendicular to AB, and say 4 inches from A to B. Lookin the table for the tangent of 31° 17. This…
Locomotives · Steam-boiler explosions
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
